Attachment 304178 Details for Bug 494034

[patch] work in progress

patch.real (text/plain), 338.00 KB, created by Mario Carrion on 2009-07-09 17:31:46 UTC

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Creator: Mario Carrion

Created: 2009-07-09 17:31:46 UTC

Size: 338.00 KB

patch

obsolete

>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Makefile.am b/UIAutomationWinforms/UIAutomationWinforms/Makefile.am
>index b3a0ff5..5a31de9 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Makefile.am
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Makefile.am
>@@ -296,8 +296,8 @@ FILES =  \
> 	Mono.UIAutomation.Winforms.Events/DateTimePicker/AutomationNamePropertyEvent.cs \
> 	Mono.UIAutomation.Winforms.Events/DateTimePicker/ButtonInvokePatternInvokedEvent.cs \
> 	Mono.UIAutomation.Winforms.Events/DateTimePicker/CheckboxAutomationHasKeyboardFocusPropertyEvent.cs \
>-	Mono.UIAutomation.Winforms.Events/DateTimePicker/PartAutomationIsEnabledPropertyEvent.cs \
> 	Mono.UIAutomation.Winforms.Events/DateTimePicker/PartAutomationHasKeyboardFocusPropertyEvent.cs \
>+	Mono.UIAutomation.Winforms.Events/DateTimePicker/PartAutomationIsEnabledPropertyEvent.cs \
> 	Mono.UIAutomation.Winforms.Events/DateTimePicker/PartListItemAutomationHasKeyboardFocusPropertyEvent.cs \
> 	Mono.UIAutomation.Winforms.Events/DateTimePicker/PartListItemSelectionItemPatternElementSelectedEvent.cs \
> 	Mono.UIAutomation.Winforms.Events/DateTimePicker/PartListItemSelectionItemPatternIsSelectedEvent.cs \
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/BalloonWindow/EmbeddedImageProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/BalloonWindow/EmbeddedImageProviderBehavior.cs
>index f48c0be..d8163ee 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/BalloonWindow/EmbeddedImageProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/BalloonWindow/EmbeddedImageProviderBehavior.cs
>@@ -66,11 +66,13 @@ namespace Mono.UIAutomation.Winforms.Behaviors.BalloonWindow
> 			get {
> 				// from ThemeWin32Classic.cs
> 				int borderSize = 8;
>-				int iconSize = (balloonWindow.Icon == SWF.ToolTipIcon.None) ? 0 : 16;
>+				int iconSize = 0;
>+				if (balloonWindow.InvokeSync (c => !(c.Icon == SWF.ToolTipIcon.None)))
>+					iconSize = 16;
> 				if (iconSize == 0)
> 					return Rect.Empty;
> 				int imageX, imageY, imageWidth, imageHeight;
>-
>+	
> 				Rect balloonRect 
> 					= (Rect) Provider.GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id);
> 			
>@@ -78,7 +80,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.BalloonWindow
> 				imageY = (int) balloonRect.Y + borderSize;
> 				imageWidth = iconSize;
> 				imageHeight = iconSize;
>-
>+	
> 				Rect imageRect = new Rect (imageX, imageY, imageWidth, imageHeight);
> 				balloonRect.Intersect (imageRect);
> 				return balloonRect;
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/BaseColorControl/SmallColorControlInvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/BaseColorControl/SmallColorControlInvokeProviderBehavior.cs
>index dd63d9f..9fb2db7 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/BaseColorControl/SmallColorControlInvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/BaseColorControl/SmallColorControlInvokeProviderBehavior.cs
>@@ -71,38 +71,27 @@ namespace Mono.UIAutomation.Winforms.Behaviors.BaseColorControl
> 		
> 		public virtual void Invoke ()
> 		{
>-			if (!Provider.Control.Enabled)
>+			if (Helper.SynchronizedGet<Control, bool> (Provider.Control, 
>+			                                           e => !Provider.Control.Enabled))
> 				throw new ElementNotEnabledException ();
> 
>-			PerformClick ();
>+			Helper.SynchronizedSet (Provider.Control, delegate {
>+			// TODO: Use internal property when backport
>+//				ColorDialog.BaseColorControl.SmallColorControl selected =
>+//					((ColorDialog.BaseColorControl) baseColorControl).UIASelectedSmallColorControl;
>+				try {
>+					ColorDialog.BaseColorControl.SmallColorControl selected =
>+						Helper.GetPrivateProperty<ColorDialog.BaseColorControl, ColorDialog.BaseColorControl.SmallColorControl>
>+							((ColorDialog.BaseColorControl) baseColorControl, "UIASelectedSmallColorControl");
>+					if (selected != null)
>+						selected.IsSelected = false;
>+				} catch (NotSupportedException) { }
>+				smallColorControl.IsSelected = true;
>+			});
> 		}
> 		
> 		#endregion	
> 		
>-		#region Private Methods
>-		
>-		private void PerformClick ()
>-		{
>-			if (Provider.Control.InvokeRequired == true) {
>-				Provider.Control.BeginInvoke (new MethodInvoker (PerformClick));
>-				return;
>-			}
>-
>-			// TODO: Use internal property when backport
>-//			ColorDialog.BaseColorControl.SmallColorControl selected =
>-//				((ColorDialog.BaseColorControl) baseColorControl).UIASelectedSmallColorControl;
>-			try {
>-				ColorDialog.BaseColorControl.SmallColorControl selected =
>-					Helper.GetPrivateProperty<ColorDialog.BaseColorControl, ColorDialog.BaseColorControl.SmallColorControl>
>-						((ColorDialog.BaseColorControl) baseColorControl, "UIASelectedSmallColorControl");
>-				if (selected != null)
>-					selected.IsSelected = false;
>-			} catch (NotSupportedException) { }
>-			smallColorControl.IsSelected = true;
>-		}
>-		
>-		#endregion
>-
> 		#region Private Field
> 
> 		ColorDialog.BaseColorControl.SmallColorControl smallColorControl;
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Button/InvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Button/InvokeProviderBehavior.cs
>index 80b2779..5c29b84 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Button/InvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Button/InvokeProviderBehavior.cs
>@@ -90,23 +90,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Button
> 		
> 		public virtual void Invoke ()
> 		{
>-			if (Provider.Control.Enabled == false)
>+			if (button.InvokeSync (c => !c.Enabled))
> 				throw new ElementNotEnabledException ();
> 
>-			PerformClick ();
>-		}
>-		
>-		#endregion	
>-		
>-		#region Private Methods
>-		
>-		private void PerformClick ()
>-		{
>-			if (Provider.Control.InvokeRequired == true) {
>-				Provider.Control.BeginInvoke (new SWF.MethodInvoker (PerformClick));
>-				return;
>-			}
>-			button.PerformClick ();
>+			button.InvokeSync (delegate { button.PerformClick (); });
> 		}
> 		
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/CheckBox/ToggleProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/CheckBox/ToggleProviderBehavior.cs
>index b7640b6..2c7e89a 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/CheckBox/ToggleProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/CheckBox/ToggleProviderBehavior.cs
>@@ -87,26 +87,30 @@ namespace Mono.UIAutomation.Winforms.Behaviors.CheckBox
> 	
> 		public void Toggle ()
> 		{
>-			if (checkbox.Enabled == false)
>+			if (checkbox.InvokeSync (c => !c.Enabled))
> 				throw new ElementNotEnabledException ();
> 
>-			switch (checkbox.CheckState) {
>+			SWF.CheckState newState = SWF.CheckState.Checked;
>+
>+			switch (checkbox.InvokeSync (c => c.CheckState)) {
> 			case SWF.CheckState.Checked:
>-				PerformToggle (checkbox, SWF.CheckState.Unchecked);
>+				newState = SWF.CheckState.Unchecked;
> 				break;
> 			case SWF.CheckState.Unchecked:
>-				if (checkbox.ThreeState)
>-					PerformToggle (checkbox, SWF.CheckState.Indeterminate);
>+				if (checkbox.InvokeSync (c => c.ThreeState))
>+					newState = SWF.CheckState.Indeterminate;
> 				else
>-					PerformToggle (checkbox, SWF.CheckState.Checked);
>+					newState = SWF.CheckState.Checked;
> 				break;
> 			// Control could still have been set to intermediate
> 			// programatically, regardless of ThreeState value.
> 			case SWF.CheckState.Indeterminate:
> 			default:
>-				PerformToggle (checkbox, SWF.CheckState.Checked);
>+				newState = SWF.CheckState.Checked;
> 				break;
> 			}
>+
>+			checkbox.InvokeSync (delegate { PerformToggle (newState); });
> 		}
> 
> 		public ToggleState ToggleState {
>@@ -127,14 +131,8 @@ namespace Mono.UIAutomation.Winforms.Behaviors.CheckBox
> 		
> 		#region Private Methods
> 		
>-		private void PerformToggle (SWF.CheckBox checkbox, SWF.CheckState state)
>+		private void PerformToggle (SWF.CheckState state)
> 		{
>-			if (checkbox.InvokeRequired == true) {
>-				checkbox.BeginInvoke (new PerformToggleDelegate (PerformToggle),
>-				                      new object [] { checkbox, state });
>-				return;
>-			}
>-
> 			// NOTE: We can count on presence of InvokeOnClick;
> 			//       it is a protected member of CheckBox.
> 			//
>@@ -151,6 +149,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.CheckBox
> 		}
> 		#endregion
> 	}
>-	
>-	delegate void PerformToggleDelegate (SWF.CheckBox checkbox, SWF.CheckState state);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ButtonInvokeBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ButtonInvokeBehavior.cs
>index 9fac7f6..b0eef15 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ButtonInvokeBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ButtonInvokeBehavior.cs
>@@ -83,28 +83,15 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ComboBox
> 		
> 		public void Invoke ()
> 		{
>-			if (Provider.Control.Enabled == false)
>+			if (Provider.Control.InvokeSync (b => !b.Enabled))
> 				throw new ElementNotEnabledException ();
>-			
>-			PerformComboBoxClick ((SWF.ComboBox) Provider.Control);
>-		}
>-		
>-		#endregion	
> 
>-		#region Private Methods
>-		
>-		private void PerformComboBoxClick (SWF.ComboBox combobox)
>-		{
>-	        if (Provider.Control.InvokeRequired == true) {
>-	            Provider.Control.BeginInvoke (new PerformComboBoxClickDelegate (PerformComboBoxClick),
>-				                              new object [] { combobox });
>-	            return;
>-	        }
>-			combobox.DroppedDown = !combobox.DroppedDown;
>+			SWF.ComboBox combobox = (SWF.ComboBox) Provider.Control;
>+			combobox.InvokeSync (delegate {
>+				combobox.DroppedDown = !combobox.DroppedDown;
>+			});
> 		}
> 		
>-		#endregion
>+		#endregion	
> 	}
>-	
>-	delegate void PerformComboBoxClickDelegate (SWF.ComboBox combobox);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ExpandCollapseProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ExpandCollapseProviderBehavior.cs
>index 1cf58eb..d1ec37a 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ExpandCollapseProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ExpandCollapseProviderBehavior.cs
>@@ -79,44 +79,39 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ComboBox
> 		
> 		public ExpandCollapseState ExpandCollapseState {
> 			get {
>-				return ((SWF.ComboBox) Provider.Control).DroppedDown ? ExpandCollapseState.Expanded 
>-					: ExpandCollapseState.Collapsed;
>+				SWF.ComboBox combobox = (SWF.ComboBox) Provider.Control;
>+				if (combobox.InvokeSync (c => c.DroppedDown))
>+					return ExpandCollapseState.Expanded;
>+				else
>+					return ExpandCollapseState.Collapsed;
> 			}
> 		}
> 
> 		public void Collapse ()
> 		{
>-			if (Provider.Control.Enabled == false)
>+			SWF.ComboBox combobox = (SWF.ComboBox) Provider.Control;
>+			
>+			if (combobox.InvokeSync (c => !c.Enabled))
> 				throw new ElementNotEnabledException ();
> 			
>-			PerformExpandOrCollapse ((SWF.ComboBox) Provider.Control, false);
>+			combobox.InvokeSync (delegate {
>+				combobox.DroppedDown = false;
>+			});
> 		}
> 
> 		public void Expand ()
> 		{
>-			if (Provider.Control.Enabled == false)
>-				throw new ElementNotEnabledException ();
>+			SWF.ComboBox combobox = (SWF.ComboBox) Provider.Control;
> 			
>-			PerformExpandOrCollapse ((SWF.ComboBox) Provider.Control, true);
>-		}
>+			if (combobox.InvokeSync (c => !c.Enabled))
>+				throw new ElementNotEnabledException ();
> 
>-		#endregion
>-		
>-		#region Private Methods
>-		
>-		private void PerformExpandOrCollapse (SWF.ComboBox combobox, bool droppedDown)
>-		{
>-			if (combobox.InvokeRequired == true) {
>-				combobox.BeginInvoke (new PerformExpandOrCollapseDelegate (PerformExpandOrCollapse),
>-				                      new object [] { combobox, droppedDown } );
>-				return;
>-			}
>-			combobox.DroppedDown = droppedDown;
>+			combobox.InvokeSync (delegate {
>+				combobox.DroppedDown = true;
>+			});
> 		}
>-		
>+
> 		#endregion
> 		
> 	}
>-	
>-	delegate void PerformExpandOrCollapseDelegate (SWF.ComboBox combobox, bool droppedDown);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ListBoxSelectionProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ListBoxSelectionProviderBehavior.cs
>index d33504c..23483f8 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ListBoxSelectionProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ListBoxSelectionProviderBehavior.cs
>@@ -70,7 +70,9 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ComboBox
> 		#region ISelectionProvider Members
> 
> 		public override bool IsSelectionRequired {
>-			get { return ((SWF.ComboBox) provider.Control).SelectedIndex != -1; }
>+			get {
>+				return ((SWF.ComboBox) Provider.Control).InvokeSync (c => c.SelectedIndex != -1);
>+			}
> 		}
> 		
> 		public override IRawElementProviderSimple[] GetSelection ()
>@@ -79,11 +81,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ComboBox
> 		}
> 
> 		#endregion
>-
>-		#region Private Fields
> 		
> 		private ComboBoxProvider provider;
>-		
>-		#endregion
> 	}
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/SelectionProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/SelectionProviderBehavior.cs
>index e7839fc..52baf6c 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/SelectionProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/SelectionProviderBehavior.cs
>@@ -95,7 +95,9 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ComboBox
> 		}
> 
> 		public virtual bool IsSelectionRequired {
>-			get { return ((SWF.ComboBox) Provider.Control).SelectedIndex != -1; }
>+			get {
>+				return ((SWF.ComboBox) Provider.Control).InvokeSync (c => c.SelectedIndex != -1);
>+			}
> 		}
> 		
> 		public virtual IRawElementProviderSimple[] GetSelection ()
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ValueProviderBehavior.cs
>index d425814..23bedbf 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ComboBox/ValueProviderBehavior.cs
>@@ -83,11 +83,11 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ComboBox
> 		#region IValueProvider Interface
> 		
> 		public bool IsReadOnly {
>-			get { return Provider.Control.Enabled == false; }
>+			get { return Provider.Control.InvokeSync (c => !c.Enabled); }
> 		}
> 
> 		public string Value {
>-			get { return Provider.Control.Text; }
>+			get { return Provider.Control.InvokeSync (c => c.Text); }
> 		}
> 
> 		public void SetValue (string value)
>@@ -95,26 +95,12 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ComboBox
> 			if (IsReadOnly == true)
> 				throw new ElementNotEnabledException ();
> 
>-			PerformSetValue (value);
>+			Provider.Control.InvokeSync (delegate {
>+				Provider.Control.Text = value;
>+			});
> 		}
> 
> 		#endregion
>-		
>-		#region Private Methods
>-		
>-		private void PerformSetValue (string value) 
>-		{
>-			if (Provider.Control.InvokeRequired == true) {
>-				Provider.Control.BeginInvoke (new ComboBoxSetValueDelegate (PerformSetValue),
>-				                              new object [] { value } );
>-				return;
>-			}
>-			
>-			Provider.Control.Text = value;
>-		}
>-		
>-		#endregion
> 	}
>-	
>-	delegate void ComboBoxSetValueDelegate (string value);
>+
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGrid/CustomInvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGrid/CustomInvokeProviderBehavior.cs
>index f925d00..20b3466 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGrid/CustomInvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGrid/CustomInvokeProviderBehavior.cs
>@@ -67,13 +67,16 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGrid
> 		
> 		public void Invoke ()
> 		{
>-			if (!customProvider.DataGridProvider.Control.Enabled)
>+			if (Helper.SynchronizedGet<SWF.Control, bool> (customProvider.DataGridProvider.Control,
>+			                                               c => !c.Enabled))
> 				throw new ElementNotEnabledException ();
> 
>-			if (customProvider.DataGridProvider.DataGrid.IsExpanded (customProvider.Row))
>-				customProvider.DataGridProvider.DataGrid.Collapse (customProvider.Row);
>-			else
>-				customProvider.DataGridProvider.DataGrid.Expand (customProvider.Row);
>+			Helper.SynchronizedSet (customProvider.DataGridProvider.DataGrid, delegate {
>+				if (customProvider.DataGridProvider.DataGrid.IsExpanded (customProvider.Row))
>+					customProvider.DataGridProvider.DataGrid.Collapse (customProvider.Row);
>+				else
>+					customProvider.DataGridProvider.DataGrid.Expand (customProvider.Row);
>+			});
> 		}
> 		
> 		#endregion	
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGrid/DataItemEditValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGrid/DataItemEditValueProviderBehavior.cs
>index 6e6cd9a..2d0d19c 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGrid/DataItemEditValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGrid/DataItemEditValueProviderBehavior.cs
>@@ -88,7 +88,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGrid
> 		}
> 		
> 		public bool IsReadOnly {
>-			get { return provider.Column.ReadOnly; }
>+			get { return false; }
> 		}
> 		
> 		public string Value {
>@@ -101,15 +101,11 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGrid
> 
> 		private void PerformSetValue (string value)
> 		{
>-			if (IsReadOnly)
>-				throw new ElementNotEnabledException ();
>-
> 			if (provider.ItemProvider.Control.InvokeRequired) {
> 				provider.ItemProvider.Control.BeginInvoke (new DataItemSetValueDelegate (PerformSetValue),
> 				                                           new object [] { value } );
> 				return;
> 			}
>-			
> 		 	try {
> 				provider.ItemProvider.SetEditValue (provider, value);
> 			} catch (Exception e) {
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGrid/HeaderItemInvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGrid/HeaderItemInvokeProviderBehavior.cs
>index 4e03a6b..07c63e5 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGrid/HeaderItemInvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGrid/HeaderItemInvokeProviderBehavior.cs
>@@ -75,7 +75,8 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGrid
> 		
> 		public void Invoke ()
> 		{
>-			if (!dataGrid.Enabled || !dataGrid.AllowSorting || !dataGrid.ColumnHeadersVisible)
>+			if (Helper.SynchronizedGet<SWF.DataGrid, bool> (dataGrid,
>+			                                                b => !b.Enabled || !b.AllowSorting || !b.ColumnHeadersVisible))
> 				throw new ElementNotEnabledException ();
> 
> 			PerformClick ();
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemChildToggleProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemChildToggleProviderBehavior.cs
>index da20415..fccd448 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemChildToggleProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemChildToggleProviderBehavior.cs
>@@ -105,45 +105,48 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGridView
> 
> 		public ToggleState ToggleState {
> 			get {
>-				// More information: 
>-				// http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridviewcheckboxcell.valuetype.aspx
>-					
>-				if (provider.CheckBoxCell.Value == null) {
>-					if (provider.CheckBoxCell.ThreeState)
>-						return ToggleState.Indeterminate;
>-					else
>-						return ToggleState.Off;
>-				} else {
>-					SWF.CheckState state = SWF.CheckState.Indeterminate;
>-					bool tryBoolean = false;
>-					try {
>-						state = (SWF.CheckState) provider.CheckBoxCell.Value;
>-					} catch (InvalidCastException) { tryBoolean = true; }
>-
>-					if (tryBoolean) {
>+				return Helper.SynchronizedGet<SWF.DataGridView, ToggleState> (provider.ItemProvider.DataGridView,
>+				                                                              delegate {
>+					// More information: 
>+					// http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridviewcheckboxcell.valuetype.aspx
>+						
>+					if (provider.CheckBoxCell.Value == null) {
>+						if (provider.CheckBoxCell.ThreeState)
>+							return ToggleState.Indeterminate;
>+						else
>+							return ToggleState.Off;
>+					} else {
>+						SWF.CheckState state = SWF.CheckState.Indeterminate;
>+						bool tryBoolean = false;
> 						try {
>-							bool val = (bool) provider.CheckBoxCell.Value;
>-							if (val)
>-								state = SWF.CheckState.Checked;
>-							else
>-								state = SWF.CheckState.Unchecked;
>-						} catch (InvalidCastException) {
>-							// We just can't get valid value
>+							state = (SWF.CheckState) provider.CheckBoxCell.Value;
>+						} catch (InvalidCastException) { tryBoolean = true; }
>+	
>+						if (tryBoolean) {
>+							try {
>+								bool val = (bool) provider.CheckBoxCell.Value;
>+								if (val)
>+									state = SWF.CheckState.Checked;
>+								else
>+									state = SWF.CheckState.Unchecked;
>+							} catch (InvalidCastException) {
>+								// We just can't get valid value
>+								return ToggleState.Indeterminate;
>+							}
>+						}
>+	
>+						switch (state) {
>+						case SWF.CheckState.Checked:
>+							return ToggleState.On;
>+						case SWF.CheckState.Unchecked:
>+							return ToggleState.Off;
>+						case SWF.CheckState.Indeterminate:
> 							return ToggleState.Indeterminate;
> 						}
>-					}
>-
>-					switch (state) {
>-					case SWF.CheckState.Checked:
>-						return ToggleState.On;
>-					case SWF.CheckState.Unchecked:
>-						return ToggleState.Off;
>-					case SWF.CheckState.Indeterminate:
>-					default:
>+						
> 						return ToggleState.Indeterminate;
> 					}
>-
>-				}
>+				});
> 			}
> 		}
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemChildValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemChildValueProviderBehavior.cs
>index e70ae45..a5c862f 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemChildValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemChildValueProviderBehavior.cs
>@@ -87,44 +87,37 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGridView
> 			if (IsReadOnly)
> 				throw new ElementNotEnabledException ();
> 
>-			PerformSetValue (value);
>+			Helper.SynchronizedSet (provider.ItemProvider.DataGridView, delegate {
>+				// Notice however that this is the weird behavior in .NET, because
>+				// editing an IsNewRow Row *WONT ADD* a new row
>+	
>+				SWF.DataGridViewCell oldCell = provider.ItemProvider.DataGridView.CurrentCell;
>+				provider.ItemProvider.DataGridView.CurrentCell = provider.TextBoxCell;
>+				provider.TextBoxCell.Value = value;
>+				provider.ItemProvider.DataGridView.CurrentCell = oldCell;
>+			});
> 		}
> 
> 		public bool IsReadOnly {
>-			get { return provider.TextBoxCell.ReadOnly; }
>+			get {
>+				return Helper.SynchronizedGet<SWF.DataGridView, bool> (provider.ItemProvider.DataGridView,
>+				                                                       r => provider.TextBoxCell.ReadOnly);
>+			}
> 		}
> 		
> 		public string Value {
>-			get { return provider.TextBoxCell.Value as string ?? string.Empty; }
>+			get {
>+				return Helper.SynchronizedGet<SWF.DataGridView, string> (provider.ItemProvider.DataGridView,
>+				                                                         v => provider.TextBoxCell.Value as string ?? string.Empty); 
>+			}
> 		}
> 		
> 		#endregion
>-
>-		#region Private Members
> 		
>-		private void PerformSetValue (string value)
>-		{
>-			if (provider.ItemProvider.DataGridView.InvokeRequired) {
>-				provider.ItemProvider.DataGridView.BeginInvoke (new SetValueDelegate (PerformSetValue),
>-				                                                new object [] { value });
>-				return;
>-			}
>-
>-			// Notice however that this is the weird behavior in .NET, because
>-			// editing an IsNewRow Row *WONT ADD* a new row
>-
>-			SWF.DataGridViewCell oldCell = provider.ItemProvider.DataGridView.CurrentCell;
>-			provider.ItemProvider.DataGridView.CurrentCell = provider.TextBoxCell;
>-			provider.TextBoxCell.Value = value;
>-			provider.ItemProvider.DataGridView.CurrentCell = oldCell;
>-		}
>-
>-
>+		#region Private fields
>+		
> 		private DataGridViewProvider.DataGridViewDataItemEditProvider provider;
>-
>-		private delegate void SetValueDelegate (string val);
>-
>+		
> 		#endregion
>-
> 	}
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemComboBoxButtonInvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemComboBoxButtonInvokeProviderBehavior.cs
>index 0d48606..5fd3844 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemComboBoxButtonInvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemComboBoxButtonInvokeProviderBehavior.cs
>@@ -71,35 +71,24 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGridView
> 		
> 		public void Invoke ()
> 		{
>-			if (provider.ComboBoxProvider.ComboBoxCell.ReadOnly)
>+			if (Helper.SynchronizedGet<SWF.DataGridView, bool> (provider.ComboBoxProvider.ItemProvider.DataGridView,
>+			                                                    r => provider.ComboBoxProvider.ComboBoxCell.ReadOnly))
> 				throw new ElementNotEnabledException ();
> 
>-			PerformClick ();
>+			Helper.SynchronizedSet (provider.ComboBoxProvider.ItemProvider.DataGridView, delegate {
>+				SWF.DataGridViewCellEventArgs args
>+					= new SWF.DataGridViewCellEventArgs (provider.ComboBoxProvider.Cell.ColumnIndex, 
>+					                                     provider.ComboBoxProvider.Cell.RowIndex);
>+				provider.ComboBoxProvider.ItemProvider.DataGridView.InternalOnCellContentClick (args);
>+			});
> 		}
> 		
>-		#endregion	
>-		
>-		#region Private Methods
>+		#endregion
> 		
>-		private void PerformClick ()
>-		{
>-			if (provider.ComboBoxProvider.ItemProvider.DataGridView.InvokeRequired) {
>-				provider.ComboBoxProvider.ItemProvider.DataGridView.BeginInvoke (new SWF.MethodInvoker (PerformClick));
>-				return;
>-			}
>-
>-			SWF.DataGridViewCellEventArgs args
>-				= new SWF.DataGridViewCellEventArgs (provider.ComboBoxProvider.Cell.ColumnIndex, 
>-				                                     provider.ComboBoxProvider.Cell.RowIndex);
>-			provider.ComboBoxProvider.ItemProvider.DataGridView.InternalOnCellContentClick (args);
>-		}
>+		#region Private fields
> 		
>-		#endregion
>-
>-		#region Private Methods
>-
> 		private DataGridViewProvider.DataGridViewDataItemComboBoxButtonProvider provider;
>-
>+		
> 		#endregion
> 		
> 	}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemComboBoxExpandCollapseProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemComboBoxExpandCollapseProviderBehavior.cs
>index 0667010..65beb01 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemComboBoxExpandCollapseProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/DataItemComboBoxExpandCollapseProviderBehavior.cs
>@@ -89,7 +89,9 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGridView
> 		
> 		public ExpandCollapseState ExpandCollapseState {
> 			get {
>-				if (lastComboBox == null || !lastComboBox.DroppedDown)
>+				if (lastComboBox == null 
>+				    || Helper.SynchronizedGet<SWF.ComboBox, bool> (lastComboBox,
>+				                                                   c => !c.DroppedDown))
> 					return ExpandCollapseState.Collapsed;
> 				else 
> 					return ExpandCollapseState.Expanded;
>@@ -98,7 +100,8 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGridView
> 
> 		public void Collapse ()
> 		{
>-			if (provider.ComboBoxCell.ReadOnly)
>+			if (Helper.SynchronizedGet<SWF.DataGridView, bool> (provider.ItemProvider.DataGridView,
>+			                                                    b => provider.ComboBoxCell.ReadOnly))
> 				throw new ElementNotEnabledException ();
> 
> 			PerformExpandOrCollapse (false);
>@@ -106,7 +109,8 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGridView
> 
> 		public void Expand ()
> 		{
>-			if (provider.ComboBoxCell.ReadOnly)
>+			if (Helper.SynchronizedGet<SWF.DataGridView, bool> (provider.ItemProvider.DataGridView,
>+			                                                    b => provider.ComboBoxCell.ReadOnly))
> 				throw new ElementNotEnabledException ();
> 			
> 			PerformExpandOrCollapse (true);
>@@ -119,37 +123,31 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGridView
> 
> 		private void PerformExpandOrCollapse (bool expand)
> 		{
>-			if (provider.ItemProvider.DataGridView.InvokeRequired) {
>-				provider.ItemProvider.DataGridView.BeginInvoke (new ExpandOrCollapseDelegate (PerformExpandOrCollapse),
>-				                                                new object [] { expand });
>-				return;
>-			}
>-
>-			SWF.DataGridViewCell oldCell = provider.ItemProvider.DataGridView.CurrentCell;
>-			provider.ItemProvider.DataGridView.CurrentCell = provider.ComboBoxCell;
>-			provider.ItemProvider.DataGridView.BeginEdit (false);
>-
>-			SWF.ComboBox combobox = provider.ItemProvider.DataGridView.EditingControl as SWF.ComboBox;
>-			if (combobox != null) {
>-				// We we'll basically are keeping a reference to the EditingControl
>-				// to listen for DroppedDown event and set it when it changes.
>-				if (lastComboBox != combobox)
>-					expandCollapseEvent.CurrentComboBox = combobox;
>-				
>-				lastComboBox = combobox;
>-				lastComboBox.DroppedDown = expand;
>-			} else
>-
>-			provider.ItemProvider.DataGridView.EndEdit ();
>+			Helper.SynchronizedSet (provider.ItemProvider.DataGridView, delegate {
>+				SWF.DataGridViewCell oldCell = provider.ItemProvider.DataGridView.CurrentCell;
>+				provider.ItemProvider.DataGridView.CurrentCell = provider.ComboBoxCell;
>+				provider.ItemProvider.DataGridView.BeginEdit (false);
>+	
>+				SWF.ComboBox combobox = provider.ItemProvider.DataGridView.EditingControl as SWF.ComboBox;
>+				if (combobox != null) {
>+					// We we'll basically are keeping a reference to the EditingControl
>+					// to listen for DroppedDown event and set it when it changes.
>+					if (lastComboBox != combobox)
>+						expandCollapseEvent.CurrentComboBox = combobox;
>+					
>+					lastComboBox = combobox;
>+					lastComboBox.DroppedDown = expand;
>+				} else
>+	
>+				provider.ItemProvider.DataGridView.EndEdit ();
> 			provider.ItemProvider.DataGridView.CurrentCell = oldCell;
>+			});
> 		}
> 
> 		private DataItemComboBoxExpandCollapsePatternStateEvent expandCollapseEvent;
> 		private SWF.ComboBox lastComboBox;
> 		private DataGridViewProvider.DataGridViewDataItemComboBoxProvider provider;
> 
>-		private delegate void ExpandOrCollapseDelegate (bool expand);
>-
> 		#endregion
> 		
> 	}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/GridProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/GridProviderBehavior.cs
>index b130d85..b3a5169 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/GridProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/GridProviderBehavior.cs
>@@ -91,11 +91,17 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGridView
> 		#region IGridProvider implementation
> 
> 		public int ColumnCount {
>-			get { return gridviewprovider.DataGridView.Columns.Count; }
>+			get {
>+				return Helper.SynchronizedGet<SWF.DataGridView, int> (gridviewprovider.DataGridView,
>+				                                                      v => v.Columns.Count);
>+			}
> 		}
> 
> 		public int RowCount {
>-			get { return gridviewprovider.DataGridView.Rows.Count; }
>+			get {
>+				return Helper.SynchronizedGet<SWF.DataGridView, int> (gridviewprovider.DataGridView,
>+				                                                      v => v.Rows.Count); 
>+			}
> 		}
> 
> 		public IRawElementProviderSimple GetItem (int row, int column)
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/HeaderItemInvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/HeaderItemInvokeProviderBehavior.cs
>index 50da066..d516c30 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/HeaderItemInvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DataGridView/HeaderItemInvokeProviderBehavior.cs
>@@ -75,7 +75,8 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DataGridView
> 		
> 		public void Invoke ()
> 		{
>-			if (!dataGridView.Enabled)
>+			if (Helper.SynchronizedGet<SWF.DataGridView, bool> (dataGridView,
>+			                                                    b => !b.Enabled))
> 				throw new ElementNotEnabledException ();
> 
> 			PerformClick ();
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DateTimePicker/ButtonInvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DateTimePicker/ButtonInvokeProviderBehavior.cs
>index 938b8bc..254ea7a 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DateTimePicker/ButtonInvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DateTimePicker/ButtonInvokeProviderBehavior.cs
>@@ -69,30 +69,18 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DateTimePicker
> #region IInvokeProvider Members
> 		public virtual void Invoke ()
> 		{
>-			if (!Provider.Control.Enabled)
>+			if (Helper.SynchronizedGet<SWF.Control, bool> (Provider.Control,
>+			                                               c => !c.Enabled))
> 				throw new ElementNotEnabledException ();
> 
>-			PerformClick ();
>-		}
>-#endregion	
>-		
>-#region Private Methods
>-		private void PerformClick ()
>-		{
>-			if (Provider.Control.InvokeRequired) {
>-				Provider.Control.BeginInvoke (
>-					new SWF.MethodInvoker (PerformClick));
>-				return;
>-			}
>-
>-			((SWF.DateTimePicker) dateTimePicker.Control)
>-				.DropDownButtonClicked ();
>+			Helper.SynchronizedSet (Provider.Control, delegate {
>+				((SWF.DateTimePicker) dateTimePicker.Control)
>+					.DropDownButtonClicked ();
>+			});
> 		}
> #endregion
>-
>-#region Private Fields
>+		
> 		private DateTimePickerProvider dateTimePicker;
>-#endregion
> 	}
> 
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DateTimePicker/PartRangeValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DateTimePicker/PartRangeValueProviderBehavior.cs
>index c4e23d5..12073d5 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DateTimePicker/PartRangeValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DateTimePicker/PartRangeValueProviderBehavior.cs
>@@ -109,15 +109,19 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DateTimePicker
> #region IRangeValueProvider Members
> 		public bool IsReadOnly {
> 			get {
>-				return (dateTimePicker.ShowCheckBox
>-				        && !dateTimePicker.Checked);
>+				return Helper.SynchronizedGet<SWF.DateTimePicker, bool> (dateTimePicker,
>+				                                                         b => b.ShowCheckBox
>+				                                                         && !b.Checked);
> 			}
> 		}
> 		
> 		public double Minimum {
> 			get {
>-				DateTime min = dateTimePicker.MinDate;
>-				DateTime cur = dateTimePicker.Value;
>+				DateTime min = Helper.SynchronizedGet<SWF.DateTimePicker, DateTime> (dateTimePicker,
>+				                                                                     v => v.MinDate);
>+				DateTime cur = Helper.SynchronizedGet<SWF.DateTimePicker, DateTime> (dateTimePicker,
>+				                                                                     v => v.Value);
>+				
> 				switch (partProvider.PartData.date_time_part) {
> 				case SWF.DateTimePicker.DateTimePart.Seconds:
> 					return IsDateEqual (min, cur) ? min.Second : 0;
>@@ -153,8 +157,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DateTimePicker
> 		
> 		public double Maximum {
> 			get {
>-				DateTime max = dateTimePicker.MaxDate;
>-				DateTime cur = dateTimePicker.Value;
>+				DateTime max = Helper.SynchronizedGet<SWF.DateTimePicker, DateTime> (dateTimePicker,
>+				                                                                     m => m.MaxDate);
>+				DateTime cur = Helper.SynchronizedGet<SWF.DateTimePicker, DateTime> (dateTimePicker,
>+				                                                                     v => v.Value);
> 				switch (partProvider.PartData.date_time_part) {
> 				case SWF.DateTimePicker.DateTimePart.Seconds:
> 					return IsDateEqual (max, cur) ? max.Second : 60;
>@@ -205,25 +211,12 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DateTimePicker
> 			if (value < Minimum || value > Maximum)
> 				throw new ArgumentOutOfRangeException ();
> 
>-			PerformSetValue (value);
>-		}
>-#endregion
>-		
>-#region Private Methods
>-		private void PerformSetValue (double value) 
>-		{
> 			if (IsReadOnly)
> 				throw new ElementNotEnabledException ();
> 
>-			if (dateTimePicker.InvokeRequired) {
>-				dateTimePicker.BeginInvoke (
>-					new DateTimePickerPartSetValueDelegate (PerformSetValue),
>-					new object [] { value }
>-				);
>-				return;
>-			}
>-
>-			dateTimePicker.SetPart ((int) value, partProvider.PartData.date_time_part);
>+			Helper.SynchronizedSet (dateTimePicker, delegate {
>+				dateTimePicker.SetPart ((int) value, partProvider.PartData.date_time_part);
>+			});
> 		}
> 
> 		private bool IsDateEqual (DateTime date1, DateTime date2)
>@@ -238,5 +231,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DateTimePicker
> #endregion
> 	}
> 
>-	public delegate void DateTimePickerPartSetValueDelegate (double value);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DateTimePicker/ToggleProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DateTimePicker/ToggleProviderBehavior.cs
>index 4511271..7f6547b 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DateTimePicker/ToggleProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/DateTimePicker/ToggleProviderBehavior.cs
>@@ -83,23 +83,13 @@ namespace Mono.UIAutomation.Winforms.Behaviors.DateTimePicker
> 
> 		public void Toggle ()
> 		{
>-			if (!Provider.Control.Enabled)
>+			if (Helper.SynchronizedGet<SWF.DateTimePicker, bool> (dateTimePicker,
>+			                                               b => !b.Enabled))
> 				throw new ElementNotEnabledException ();
> 
>-			PerformToggle ();
>-		}
>-#endregion	
>-		
>-#region Private Methods
>-		private void PerformToggle ()
>-		{
>-			if (Provider.Control.InvokeRequired) {
>-				Provider.Control.BeginInvoke (
>-					new SWF.MethodInvoker (PerformToggle));
>-				return;
>-			}
>-
>-			dateTimePicker.Checked = !dateTimePicker.Checked;
>+			Helper.SynchronizedSet (dateTimePicker, delegate {
>+				dateTimePicker.Checked = !dateTimePicker.Checked;
>+			});
> 		}
> #endregion
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Form/TransformProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Form/TransformProviderBehavior.cs
>index 90425e1..8405e0f 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Form/TransformProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Form/TransformProviderBehavior.cs
>@@ -91,13 +91,13 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Form
> 	
> 		public bool CanMove {
> 			get {
>-				return form.WindowState == SWF.FormWindowState.Normal;
>+				return form.InvokeSync (f => f.WindowState == SWF.FormWindowState.Normal);
> 			}
> 		}
> 
> 		public bool CanResize {
> 			get {
>-				switch (form.FormBorderStyle) {
>+				switch (form.InvokeSync (f => f.FormBorderStyle)) {
> 				case SWF.FormBorderStyle.Fixed3D:
> 				case SWF.FormBorderStyle.FixedDialog:
> 				case SWF.FormBorderStyle.FixedSingle:
>@@ -119,14 +119,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Form
> 			//       exceptions are thrown with bad input
> 			if (!CanMove)
> 				throw new InvalidOperationException ("CanMove is false");
>-			
>-			if (form.InvokeRequired == true) {
>-				form.BeginInvoke (new PerformTransformDelegate (Move),
>-				                  new object [] { x, y});
>-				return;
>-			}
>-			
>-			form.Location = new Point ((int) x, (int) y);
>+
>+			form.InvokeSync (delegate {
>+				form.Location = new Point ((int) x, (int) y);
>+			});
> 		}
> 
> 		public void Resize (double width, double height)
>@@ -135,14 +131,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Form
> 			//       exceptions are thrown with bad input
> 			if (!CanResize)
> 				throw new InvalidOperationException ("CanResize is false");
>-			
>-			if (form.InvokeRequired == true) {
>-				form.BeginInvoke (new PerformTransformDelegate (Resize),
>-				                  new object [] { width, height});
>-				return;
>-			}
>-			
>-			form.Size = new Size ((int) width, (int) height);
>+
>+			form.InvokeSync (delegate { 
>+				form.Size = new Size ((int) width, (int) height);
>+			});
> 		}
> 
> 		public void Rotate (double degrees)
>@@ -159,7 +151,5 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Form
> 		#endregion
> 		
> 	}
>-	
>-	delegate void PerformTransformDelegate (double width, double height);
> 
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Form/WindowProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Form/WindowProviderBehavior.cs
>index 82da477..3061af9 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Form/WindowProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Form/WindowProviderBehavior.cs
>@@ -141,7 +141,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Form
> 		
> 		public void SetVisualState (WindowVisualState state)
> 		{
>-			SWF.FormWindowState newState = form.WindowState;
>+			SWF.FormWindowState newState = form.InvokeSync (f => f.WindowState);
> 			switch (state) {
> 			case WindowVisualState.Maximized:
> 				newState = SWF.FormWindowState.Maximized;
>@@ -153,36 +153,29 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Form
> 				newState = SWF.FormWindowState.Normal;
> 				break;
> 			}
>-			PerformSetVisualState (form, newState);
>+
>+			form.InvokeSync (delegate { form.WindowState = newState; });
> 		}
> 		
> 		public void Close ()
> 		{
>-			form.Close ();
>+			form.InvokeSync (delegate { form.Close (); });
> 		}
> 		
> 		public bool Minimizable {
>-			get {
>-				return form.MinimizeBox;
>-			}
>+			get { return form.InvokeSync (f => f.MinimizeBox); }
> 		}
> 		
> 		public bool Maximizable {
>-			get {
>-				return form.MaximizeBox;
>-			}
>+			get { return form.InvokeSync (f => f.MaximizeBox); }
> 		}
> 		
> 		public bool IsTopmost {
>-			get {
>-				return form.TopMost;
>-			}
>+			get { return form.InvokeSync (f => f.TopMost); }
> 		}
> 		
> 		public bool IsModal {
>-			get {
>-				return form.Modal;
>-			}
>+			get { return form.InvokeSync (f => f.Modal); }
> 		}
> 		
> 		public WindowInteractionState InteractionState {
>@@ -197,7 +190,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Form
> 		
> 		public WindowVisualState VisualState {
> 			get {
>-				switch (form.WindowState) {
>+				switch (form.InvokeSync (f => f.WindowState)) {
> 				case SWF.FormWindowState.Maximized:
> 					return WindowVisualState.Maximized;
> 				case SWF.FormWindowState.Minimized:
>@@ -225,20 +218,6 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Form
> 		
> 		#endregion
> 		
>-		#region Private Methods
>-		
>-		private void PerformSetVisualState (SWF.Form form, SWF.FormWindowState state)
>-		{
>-			if (form.InvokeRequired == true) {
>-				form.BeginInvoke (new PerformSetVisualStateDelegate (PerformSetVisualState),
>-				                  new object [] { form, state });
>-				return;
>-			}
>-			form.WindowState = state;
>-		}
>-		
>-		#endregion
>-		
> 		#region Private Fields
> 
> 		private bool closing;
>@@ -247,6 +226,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Form
> 		#endregion
> 	}
> 	
>-	delegate void PerformSetVisualStateDelegate (SWF.Form form, SWF.FormWindowState state);
>-	
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Generic/ScrollProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Generic/ScrollProviderBehavior.cs
>index 465d040..1202c71 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Generic/ScrollProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Generic/ScrollProviderBehavior.cs
>@@ -102,10 +102,16 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Generic
> 		//FIXME: This MUST BE locale-specific
> 		public double HorizontalScrollPercent {
> 			get { 
>-				if (HorizontallyScrollable == false || hscrollbar.Maximum == 0)
>+				if (HorizontallyScrollable == false)
> 					return ScrollPatternIdentifiers.NoScroll;
>-				else
>-					return (hscrollbar.Value * 100) / hscrollbar.Maximum; 
>+				else {
>+					return hscrollbar.InvokeSync (c => {
>+						if (c.Maximum == 0)
>+							return ScrollPatternIdentifiers.NoScroll;
>+						else
>+							return (double) ((c.Value * 100) / c.Maximum);
>+					});
>+				}
> 			}
> 		}
> 		
>@@ -128,10 +134,16 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Generic
> 		//FIXME: This MUST BE locale-specific
> 		public double VerticalScrollPercent {
> 			get { 
>-				if (VerticallyScrollable == false || vscrollbar.Maximum == 0)
>+				if (VerticallyScrollable == false)
> 					return ScrollPatternIdentifiers.NoScroll;
>-				else
>-					return (vscrollbar.Value * 100) / vscrollbar.Maximum; 
>+				else {
>+					return vscrollbar.InvokeSync (c => {
>+						if (c.Maximum == 0)
>+							return ScrollPatternIdentifiers.NoScroll;
>+						else
>+							return (double) ((c.Value * 100) / c.Maximum);
>+					});
>+				}
> 			}
> 		}
> 
>@@ -164,15 +176,23 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Generic
> 			if (horizontalPercent != ScrollPatternIdentifiers.NoScroll) {
> 				if (horizontalPercent < 0 || horizontalPercent > 100)
> 					throw new ArgumentOutOfRangeException ();
>-				else
>-					PerformScrollByPercent (hscrollbar, (int) ((horizontalPercent * hscrollbar.Maximum) / 100));
>+				else {
>+					double maximum = hscrollbar.InvokeSync (h => h.Maximum);
>+					hscrollbar.InvokeSync (delegate {
>+						hscrollbar.Value = (int) ((horizontalPercent * maximum) / 100);
>+					});
>+				}
> 			}
> 			
> 			if (verticalPercent != ScrollPatternIdentifiers.NoScroll) {
> 			    if (verticalPercent < 0 || verticalPercent > 100)
> 					throw new ArgumentOutOfRangeException ();
>-				else 
>-					PerformScrollByPercent (vscrollbar, (int) ((verticalPercent * vscrollbar.Maximum) / 100));
>+				else {
>+					double maximum = vscrollbar.InvokeSync (v => v.Maximum);
>+					hscrollbar.InvokeSync (delegate {
>+						vscrollbar.Value = (int) ((verticalPercent * maximum) / 100);
>+					});
>+				}
> 			}
> 		}
> 
>@@ -222,28 +242,11 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Generic
> 			invoke
> 				= (Action<SWF.ScrollBar>) Delegate.CreateDelegate (typeof (Action<SWF.ScrollBar>), 
> 				                                                   methodInfo);
>-			PerformScrollByAmount (scrollbar);
>-		}
>-		
>-		private void PerformScrollByAmount (SWF.ScrollBar scrollbar)
>-		{
>-			if (scrollbar.InvokeRequired == true) {
>-				scrollbar.BeginInvoke (new ScrollByAmountDelegate (PerformScrollByAmount),
>-				                       new object [] { scrollbar });
>-				return;
>-			}
>-			invoke (scrollbar);
>-			invoke = null;
>-		}
>-		
>-		private void PerformScrollByPercent (SWF.ScrollBar scrollbar, int value)
>-		{
>-			if (scrollbar.InvokeRequired == true) {
>-				scrollbar.BeginInvoke (new ScrollByPercentDelegate (PerformScrollByPercent),
>-				                       new object [] { scrollbar, value });
>-				return;
>-			}
>-			scrollbar.Value = value;
>+
>+			scrollbar.InvokeSync (delegate { 
>+				invoke (scrollbar);
>+				invoke = null;
>+			});
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Generic/SelectionItemProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Generic/SelectionItemProviderBehavior.cs
>index 869b514..174f86a 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Generic/SelectionItemProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Generic/SelectionItemProviderBehavior.cs
>@@ -122,12 +122,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Generic
> 		{
> 			if (IsSelected)
> 				return;
>-			
>-			if (itemProvider.ContainerControl.InvokeRequired) {
>-				itemProvider.ContainerControl.BeginInvoke (new MethodInvoker (Select));
>-				return;
>-			}
>-			itemProvider.Select ();
>+
>+			itemProvider.ContainerControl.InvokeSync (delegate {
>+				itemProvider.Select ();
>+			});
> 		}
> 
> 		public bool IsSelected {
>@@ -165,11 +163,9 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Generic
> 
> 		private void PerformUnselect ()
> 		{
>-			if (itemProvider.ContainerControl.InvokeRequired) {
>-				itemProvider.ContainerControl.BeginInvoke (new MethodInvoker (PerformUnselect));
>-				return;
>-			}
>-			itemProvider.Unselect ();
>+			itemProvider.ContainerControl.InvokeSync (delegate {
>+				itemProvider.Unselect ();
>+			});
> 		}
> 		
> 		private T itemProvider;
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/LinkLabel/InvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/LinkLabel/InvokeProviderBehavior.cs
>index 0b6feaa..4279568 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/LinkLabel/InvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/LinkLabel/InvokeProviderBehavior.cs
>@@ -86,39 +86,47 @@ namespace Mono.UIAutomation.Winforms.Behaviors.LinkLabel
> 		#region IHypertext Specialization
> 		
> 		public int NumberOfLinks { 
>-			get { return linkLabel.Links.Count; }
>+			get { return linkLabel.InvokeSync (c => c.Links.Count); }
> 		}
> 		
> 		public int Start (int index) 
> 		{
>-			if (index >= linkLabel.Links.Count || index < 0)
>-				return -1;
>-			else
>-				return linkLabel.Links [index].Start;
>+			return linkLabel.InvokeSync (c => {
>+				if (index >= c.Links.Count || index < 0)
>+					return -1;
>+				else
>+					return c.Links [index].Start;
>+			});
> 		}
> 		
> 		public int Length (int index)
> 		{
>-			if (index >= linkLabel.Links.Count || index < 0)
>-				return -1;
>-			else
>-				return linkLabel.Links [index].Length;
>+			return linkLabel.InvokeSync (c => {
>+				if (index >= c.Links.Count || index < 0)
>+					return -1;
>+				else
>+					return c.Links [index].Length;
>+			});
> 		}
> 		
> 		public string Uri (int index)
> 		{
>-			if (index >= linkLabel.Links.Count || index < 0)
>-				return null;
>-			else
>-				return linkLabel.Links [index].LinkData as string;
>+			return linkLabel.InvokeSync (c => {
>+				if (index >= c.Links.Count || index < 0)
>+					return null;
>+				else
>+					return c.Links [index].LinkData as string;
>+			});
> 		}
> 		
> 		public bool Enabled (int index)
> 		{
>-			if (!linkLabel.Enabled || index >= linkLabel.Links.Count || index < 0)
>-				return false;
>-			else
>-				return linkLabel.Links [index].Enabled;
>+			return linkLabel.InvokeSync (c => {
>+				if (!c.Enabled || index >= c.Links.Count || index < 0)
>+					return false;
>+				else
>+					return c.Links [index].Enabled;
>+			});
> 		}
> 		
> 		public void Invoke (int index)
>@@ -126,41 +134,26 @@ namespace Mono.UIAutomation.Winforms.Behaviors.LinkLabel
> 			if (!Enabled (index))
> 				throw new ElementNotEnabledException ();
> 			
>-			PerformClick (index);
>-		}
>-		
>-		#endregion
>-		
>-		#region Private Methods
>-		
>-		private void PerformClick (int index)
>-		{
>-			if (index >= linkLabel.Links.Count || index < 0)
>-				return;
>-
>-			if (linkLabel.InvokeRequired) {
>-				linkLabel.BeginInvoke (new PerformClickDelegate (PerformClick),
>-				                       new object [] { index });
>-				return;
>-			}
>-			
>-			MethodInfo methodInfo = typeof (SWF.LinkLabel).GetMethod ("OnLinkClicked",
>-			                                                          BindingFlags.InvokeMethod
>-			                                                          | BindingFlags.NonPublic
>-			                                                          | BindingFlags.Instance);
>-			Action<SWF.LinkLabel, SWF.LinkLabelLinkClickedEventArgs> invokeMethod
>-				= (Action<SWF.LinkLabel, SWF.LinkLabelLinkClickedEventArgs>) Delegate.CreateDelegate 
>-					(typeof (Action<SWF.LinkLabel, SWF.LinkLabelLinkClickedEventArgs>),
>-					 methodInfo);
>-
>-			SWF.LinkLabelLinkClickedEventArgs args 
>-				= new SWF.LinkLabelLinkClickedEventArgs (linkLabel.Links [index],
>-				                                         SWF.MouseButtons.Left);
>-			invokeMethod (linkLabel, args);
>+			linkLabel.InvokeSync (c => {
>+				if (index >= c.Links.Count || index < 0)
>+					return;
>+	
>+				MethodInfo methodInfo = typeof (SWF.LinkLabel).GetMethod ("OnLinkClicked",
>+				                                                          BindingFlags.InvokeMethod
>+				                                                          | BindingFlags.NonPublic
>+				                                                          | BindingFlags.Instance);
>+				Action<SWF.LinkLabel, SWF.LinkLabelLinkClickedEventArgs> invokeMethod
>+					= (Action<SWF.LinkLabel, SWF.LinkLabelLinkClickedEventArgs>) Delegate.CreateDelegate 
>+						(typeof (Action<SWF.LinkLabel, SWF.LinkLabelLinkClickedEventArgs>),
>+						 methodInfo);
>+	
>+				SWF.LinkLabelLinkClickedEventArgs args 
>+					= new SWF.LinkLabelLinkClickedEventArgs (c.Links [index],
>+					                                         SWF.MouseButtons.Left);
>+				invokeMethod (c, args);
>+			});
> 		}
> 		
> 		#endregion
> 	}
>-	
>-	delegate void PerformClickDelegate (int index);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListBox/SelectionProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListBox/SelectionProviderBehavior.cs
>index fdb6cce..053bdd2 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListBox/SelectionProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListBox/SelectionProviderBehavior.cs
>@@ -92,11 +92,11 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListBox
> 		#region ISelectionProvider Members
> 
> 		public bool CanSelectMultiple {
>-			get { 
>+			get {
> 				SWF.ListBox listBoxControl = (SWF.ListBox) Provider.Control;
>-				
>-				return listBoxControl.SelectionMode == SWF.SelectionMode.MultiExtended
>-					|| listBoxControl.SelectionMode == SWF.SelectionMode.MultiSimple;
>+
>+				return listBoxControl.InvokeSync (c => c.SelectionMode == SWF.SelectionMode.MultiExtended
>+				                                   || c.SelectionMode == SWF.SelectionMode.MultiSimple);
> 			}
> 		}
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListItem/ScrollItemProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListItem/ScrollItemProviderBehavior.cs
>index eca07dc..c6d3f4f 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListItem/ScrollItemProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListItem/ScrollItemProviderBehavior.cs
>@@ -69,26 +69,12 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListItem
> 		
> 		public void ScrollIntoView ()
> 		{
>-			PerformScrollIntoView (((ListItemProvider) Provider).ListProvider);
>+			IListProvider itemProvider = ((ListItemProvider) Provider).ListProvider;
>+			itemProvider.Control.InvokeSync (delegate {
>+				itemProvider.ScrollItemIntoView ((ListItemProvider) Provider);
>+			});
> 		}
> 
> 		#endregion
>-		
>-		#region Private Methods
>-		
>-		private void PerformScrollIntoView (IListProvider provider)
>-		{
>-			if (provider.Control.InvokeRequired == true) {
>-				provider.Control.BeginInvoke (new ScrollIntoViewDelegate (PerformScrollIntoView),
>-				                              new object [] { provider });
>-				return;
>-			}
>-
>-			provider.ScrollItemIntoView ((ListItemProvider) Provider);
>-		}
>-		
>-		#endregion
> 	}
>-	
>-	delegate void ScrollIntoViewDelegate (ListProvider provider);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListItem/ToggleProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListItem/ToggleProviderBehavior.cs
>index ab7a9f5..481d99d 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListItem/ToggleProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListItem/ToggleProviderBehavior.cs
>@@ -78,13 +78,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListItem
> 		public void Toggle ()
> 		{
> 			ListItemProvider provider = (ListItemProvider) Provider;
>-			
>-			if (provider.ListProvider.Control.InvokeRequired == true) {
>-				provider.ListProvider.Control.BeginInvoke (new SWF.MethodInvoker (Toggle));
>-				return;
>-			}
>-			
>-			provider.ListProvider.ToggleItem (provider);
>+
>+			provider.ListProvider.Control.InvokeSync (delegate {
>+				provider.ListProvider.ToggleItem (provider);
>+			});
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/GridProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/GridProviderBehavior.cs
>index 4eed399..e0c7d4d 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/GridProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/GridProviderBehavior.cs
>@@ -89,24 +89,28 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 
> 		public int ColumnCount {
> 			get {
>-				if (listView.View == SWF.View.Details)
>-					return listView.Columns.Count;
>-				else { //Is View.List
>-					if (RowCount == 0)
>-						return -1;
>-
>-					bool module = listView.Items.Count % RowCount > 0;
>-					return (listView.Items.Count / RowCount) + (module ? 1 : 0);
>-				}
>+				return listView.InvokeSync (c => {
>+					if (c.View == SWF.View.Details)
>+						return c.Columns.Count;
>+					else { //Is View.List
>+						if (RowCount == 0)
>+							return -1;
>+	
>+						bool module = c.Items.Count % RowCount > 0;
>+						return (c.Items.Count / RowCount) + (module ? 1 : 0);
>+					}
>+				});
> 			}
> 		}
> 
> 		public int RowCount {
> 			get {
>-				if (listView.View == SWF.View.Details)
>-					return listView.Items.Count;
>-				else //Is View.List
>-					return listView.UIARows; 
>+				return listView.InvokeSync (c => {
>+					if (c.View == SWF.View.Details)
>+						return c.Items.Count;
>+					else //Is View.List
>+						return c.UIARows;
>+				});
> 			}
> 		}
> 
>@@ -121,7 +125,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 
> 			ListViewProvider provider = (ListViewProvider) Provider;
> 
>-			if (listView.View == SWF.View.Details) {
>+			if (listView.InvokeSync (c => c.View == SWF.View.Details)) {
> 				// FIXME: In Vista when listView.Groups == 0 no Groups are added,
> 				// and we should iterate when listView.Groups > 0
> 				SWF.ListViewItem item = listView.Items [row];
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/GroupGridProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/GroupGridProviderBehavior.cs
>index e6c862d..eb0a4f4 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/GroupGridProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/GroupGridProviderBehavior.cs
>@@ -97,17 +97,19 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 		
> 		public int ColumnCount {
> 			get {
>-				if (viewGroupProvider.ListView.View == SWF.View.Details)
>-					return viewGroupProvider.ListView.Columns.Count;
>-				else {
>-					int maxColums = viewGroupProvider.ListView.UIAColumns;
>-					int itemsInGroup = ItemsInGroupCount ();
>-	
>-					if (itemsInGroup < maxColums)
>-						return itemsInGroup;
>-					else
>-						return maxColums;
>-				}
>+				return viewGroupProvider.ListView.InvokeSync (c => {
>+					if (viewGroupProvider.ListView.View == SWF.View.Details)
>+						return c.Columns.Count;
>+					else {
>+						int maxColums = c.UIAColumns;
>+						int itemsInGroup = ItemsInGroupCount ();
>+		
>+						if (itemsInGroup < maxColums)
>+							return itemsInGroup;
>+						else
>+							return maxColums;
>+					}
>+				});
> 			}
> 		}
> 		
>@@ -135,17 +137,19 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 
> 		private int ItemsInGroupCount ()
> 		{
>-			ListViewProvider listViewProvider
>-				= (ListViewProvider) ProviderFactory.FindProvider (viewGroupProvider.ListView);
>-			if (listViewProvider.IsDefaultGroup (viewGroupProvider.Group) == true) {
>-				int itemsInGroup = 0;
>-				for (int index = 0; index < viewGroupProvider.ListView.Items.Count; index++) {
>-					if (viewGroupProvider.ListView.Items [index].Group == null)
>-						itemsInGroup++;
>-				}
>-				return itemsInGroup;
>-			} else
>+			return viewGroupProvider.ListView.InvokeSync (c => {
>+				ListViewProvider listViewProvider
>+					= (ListViewProvider) ProviderFactory.FindProvider (viewGroupProvider.ListView);
>+				if (listViewProvider.IsDefaultGroup (viewGroupProvider.Group) == true) {
>+					int itemsInGroup = 0;
>+					for (int index = 0; index < c.Items.Count; index++) {
>+						if (c.Items [index].Group == null)
>+							itemsInGroup++;
>+					}
>+					return itemsInGroup;
>+				} else
> 				return viewGroupProvider.Group.Items.Count;
>+			});
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/HeaderItemInvokeProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/HeaderItemInvokeProvider.cs
>index 0c29691..2fd7934 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/HeaderItemInvokeProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/HeaderItemInvokeProvider.cs
>@@ -70,10 +70,8 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 		#region IInvokeProvider implementation 
> 		
> 		public void Invoke ()
>-		{	
>-			var clickArgs = new SWF.ColumnClickEventArgs (
>-			  itemProvider.ColumnHeader.ListView.Columns.IndexOf (itemProvider.ColumnHeader));
>-			itemProvider.ColumnHeader.ListView.OnColumnClick (clickArgs);
>+		{
>+			Log.Warn ("HeaderItemInvokePatternInvokedEvent: Invoke not implemented");
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemCheckBoxToggleProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemCheckBoxToggleProviderBehavior.cs
>index fbdce16..b56bc25 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemCheckBoxToggleProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemCheckBoxToggleProviderBehavior.cs
>@@ -84,13 +84,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 		public void Toggle ()
> 		{
> 			ListItemProvider provider = checkboxProvider.ItemProvider;
>-			
>-			if (provider.ListProvider.Control.InvokeRequired == true) {
>-				provider.ListProvider.Control.BeginInvoke (new SWF.MethodInvoker (Toggle));
>-				return;
>-			}
>-			
>-			provider.ListProvider.ToggleItem (provider);
>+
>+			provider.ListProvider.Control.InvokeSync (delegate {
>+				provider.ListProvider.ToggleItem (provider);
>+			});
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemClipboardProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemClipboardProviderBehavior.cs
>index 37b1f88..ac2466c 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemClipboardProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemClipboardProviderBehavior.cs
>@@ -77,26 +77,13 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 			position = (int) System.Math.Min (position, text.Length);
> 
> 			string newValue = viewItem.Text.Insert (position, SWF.Clipboard.GetText ());
>-			PerformSetValue (newValue);
>+			viewItem.ListView.InvokeSync (delegate {
>+				viewItem.Text = newValue;
>+			});
> 		}
> 
> 		#endregion
> 
>-		#region Private Methods
>-
>-		private void PerformSetValue (string value)
>-		{
>-			if (viewItem.ListView.InvokeRequired == true) {
>-				viewItem.ListView.BeginInvoke (new ListItemSetValueDelegate (PerformSetValue),
>-				                               new object [] { value } );
>-				return;
>-			}
>-			
>-			viewItem.Text = value;
>-		}
>-
>-		#endregion
>-		
> 		#region Private Fields
> 		
> 		private SWF.ListViewItem viewItem;
>@@ -104,5 +91,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 		#endregion
> 	}
> 
>-	delegate void ListItemSetValueDelegate (string value);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemEditGridItemProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemEditGridItemProviderBehavior.cs
>index b09b1e1..b2df7f4 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemEditGridItemProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemEditGridItemProviderBehavior.cs
>@@ -106,14 +106,14 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 		public int Row {
> 			get {
> 				SWF.ListView listView = editProvider.ItemProvider.ListView;
>-				return listView.Items.IndexOf (editProvider.ItemProvider.ListViewItem);
>+				return listView.InvokeSync (c => c.Items.IndexOf (editProvider.ItemProvider.ListViewItem) );
> 			}
> 		}
> 		
> 		public int Column {
> 			get {
> 				SWF.ListView listView = editProvider.ItemProvider.ListView;
>-				return listView.Columns.IndexOf (editProvider.ColumnHeader);
>+				return listView.InvokeSync (c => c.Columns.IndexOf (editProvider.ColumnHeader) );
> 			}
> 		}
> 		
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemEditValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemEditValueProviderBehavior.cs
>index db4dffd..5877bfb 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemEditValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemEditValueProviderBehavior.cs
>@@ -87,48 +87,38 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 		
> 		public void SetValue (string value)
> 		{
>-			PerformSetValue (value);
>+			int indexOf = Helper.SynchronizedGet<SWF.ListView, int> (listView,
>+			                                                         l => l.Columns.IndexOf (columnHeader));
>+
>+			if (indexOf < 0 || indexOf >= listViewItem.SubItems.Count)
>+				return;
>+
>+			Helper.SynchronizedSet (listView, delegate {
>+				if (indexOf == 0)
>+					listViewItem.Text = value;
>+				else
>+					listViewItem.SubItems [indexOf - 1].Text = value;
>+			});
> 		}
> 		
> 		public bool IsReadOnly {
>-			get { return !listView.LabelEdit; }
>+			get { return listView.InvokeSync (l => !l.LabelEdit); }
> 		}
> 		
> 		public string Value {
> 			get {
>-				int indexOf = listView.Columns.IndexOf (columnHeader);
>-
>-				if (indexOf < 0 || indexOf >= listViewItem.SubItems.Count)
>-					return string.Empty;
>-				else
>-					return listViewItem.SubItems [indexOf].Text;
>+				return listView.InvokeSync (c => {
>+					int indexOf = c.Columns.IndexOf (columnHeader);
>+	
>+					if (indexOf < 0 || indexOf >= listViewItem.SubItems.Count)
>+						return string.Empty;
>+					else
>+						return listViewItem.SubItems [indexOf].Text;
>+				});
> 			}
> 		}
> 		
> 		#endregion
>-
>-		#region Private Methods
>-
>-		private void PerformSetValue (string value)
>-		{
>-			int indexOf = listView.Columns.IndexOf (columnHeader);
>-
>-			if (indexOf < 0 || indexOf >= listViewItem.SubItems.Count)
>-				return;
>-			
>-			if (listView.InvokeRequired == true) {
>-				listView.BeginInvoke (new ListItemSetValueDelegate (PerformSetValue),
>-				                      new object [] { value } );
>-				return;
>-			}
>-
>-			if (indexOf == 0)
>-				listViewItem.Text = value;
>-			else
>-				listViewItem.SubItems [indexOf - 1].Text = value;
>-		}
>-
>-		#endregion
> 		
> 		#region Private Fields
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemEmbeddedImageProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemEmbeddedImageProviderBehavior.cs
>index 808e8bb..2ecf887 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemEmbeddedImageProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemEmbeddedImageProviderBehavior.cs
>@@ -25,7 +25,7 @@
> 
> using System;
> using System.Windows;
>-using System.Windows.Forms;
>+using SWF = System.Windows.Forms;
> using Mono.UIAutomation.Bridge;
> using System.Windows.Automation;
> using Mono.UIAutomation.Winforms;
>@@ -63,28 +63,33 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 			get {
> 				ListViewProvider.ListViewListItemProvider itemProvider 
> 					= (ListViewProvider.ListViewListItemProvider) Provider;
>-				ListViewItem item = itemProvider.ObjectItem as ListViewItem;
>-				if (item == null || item.ListView == null 
>-				    || (item.ImageIndex == -1 && item.ImageKey == string.Empty))
>-					return System.Windows.Rect.Empty;
>-
>-				ImageList imageList = null;
>-				if (item.ListView.View == View.LargeIcon)
>-					imageList = item.ListView.LargeImageList;
>-				else
>-					imageList = item.ListView.SmallImageList;
>+				SWF.ListViewItem item = itemProvider.ObjectItem as SWF.ListViewItem;
> 
>-				if (imageList == null)
>+				if (item == null || item.ListView == null)
> 					return System.Windows.Rect.Empty;
> 
>-				Rect rect = itemProvider.BoundingRectangle;
>-				rect.Width = imageList.ImageSize.Width;
>-				rect.Height = imageList.ImageSize.Height;
>-
>-				if (itemProvider.CheckboxProvider != null) 
>-					rect.X += itemProvider.CheckboxProvider.BoundingRectangle.Width;
>+				return item.ListView.InvokeSync (c => {
>+				    if (item.ImageIndex == -1 && item.ImageKey == string.Empty)
>+						return System.Windows.Rect.Empty;
> 
>-				return rect;
>+					SWF.ImageList imageList = null;
>+					if (c.View == SWF.View.LargeIcon)
>+						imageList = c.LargeImageList;
>+					else
>+						imageList = c.SmallImageList;
>+	
>+					if (imageList == null)
>+						return System.Windows.Rect.Empty;
>+	
>+					Rect rect = itemProvider.BoundingRectangle;
>+					rect.Width = imageList.ImageSize.Width;
>+					rect.Height = imageList.ImageSize.Height;
>+	
>+					if (itemProvider.CheckboxProvider != null) 
>+						rect.X += itemProvider.CheckboxProvider.BoundingRectangle.Width;
>+	
>+					return rect;
>+				});
> 			}
> 		}
> 		
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemGridItemProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemGridItemProviderBehavior.cs
>index 59c2e5e..93d5e27 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemGridItemProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemGridItemProviderBehavior.cs
>@@ -107,12 +107,14 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 			get { 
> 				SWF.ListView view = (SWF.ListView) viewProvider.Control;
> 
>-				if (view.View == SWF.View.List) //From Top to Bottom
>-					return MaxRows == 0 ? -1 : IndexOf % MaxRows;
>-				else if (view.View == SWF.View.Details)
>-					return itemProvider.Index;
>-				else //From Left to Right
>+				return view.InvokeSync (c => {
>+					if (c.View == SWF.View.List) //From Top to Bottom
>+						return MaxRows == 0 ? -1 : IndexOf % MaxRows;
>+					else if (c.View == SWF.View.Details)
>+						return itemProvider.Index;
>+					else //From Left to Right
> 					return MaxColumns == 0 ? -1 : IndexOf / MaxColumns;
>+				});
> 			}
> 		}
> 		
>@@ -120,12 +122,14 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 			get {
> 				SWF.ListView view = (SWF.ListView) viewProvider.Control;
> 
>-				if (view.View == SWF.View.List) //From Top to Bottom
>-					return MaxRows == 0 ? -1 : IndexOf / MaxRows;
>-				else if (view.View == SWF.View.Details) // Always 0
>-					return 0;
>-				else //From Left to Right
>-					return IndexOf - (Row * MaxColumns); 
>+				return view.InvokeSync (c => {
>+					if (c.View == SWF.View.List) //From Top to Bottom
>+						return MaxRows == 0 ? -1 : IndexOf / MaxRows;
>+					else if (c.View == SWF.View.Details) // Always 0
>+						return 0;
>+					else //From Left to Right
>+					return IndexOf - (Row * MaxColumns);
>+				});
> 			}
> 		}
> 		
>@@ -149,36 +153,38 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 			get {
> 				SWF.ListViewItem item = (SWF.ListViewItem) itemProvider.ObjectItem;
> 
>-				if (view.View == SWF.View.List || view.ShowGroups == false)
>-					return view.Items.IndexOf (item);
>-
>-				if (viewProvider.IsDefaultGroup (group) == true) {					
>-					int indexOf = 0;
>-					bool found = false;					
>-					
>-					//TODO: Is this OK??
>-					for (int index = 0; index < view.Items.Count; index++) {
>-						if (view.Items [index].Group == null) {
>-							if (view.Items [index] == item) {
>-								found = true;
>-								break;
>+				return view.InvokeSync (c => {
>+					if (c.View == SWF.View.List || c.ShowGroups == false)
>+						return c.Items.IndexOf (item);
>+	
>+					if (viewProvider.IsDefaultGroup (group) == true) {					
>+						int indexOf = 0;
>+						bool found = false;					
>+						
>+						//TODO: Is this OK??
>+						for (int index = 0; index < c.Items.Count; index++) {
>+							if (c.Items [index].Group == null) {
>+								if (c.Items [index] == item) {
>+									found = true;
>+									break;
>+								}
>+								indexOf++;
> 							}
>-							indexOf++;
> 						}
>-					}
>-					
>-					return found == false ? -1 : indexOf;
>-				} else
>-					return group.Items.IndexOf (item);
>+						
>+						return found == false ? -1 : indexOf;
>+					} else
>+						return group.Items.IndexOf (item);
>+				});
> 			}
> 		}
> 		
> 		private int MaxColumns {
>-			get { return view.UIAColumns; }
>+			get { return view.InvokeSync (v => v.UIAColumns); }
> 		}
> 
> 		private int MaxRows {
>-			get { return view.UIARows; }
>+			get { return view.InvokeSync (v => v.UIARows); }
> 		}
> 		
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemValueProviderBehavior.cs
>index 19e460c..7809aff 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemValueProviderBehavior.cs
>@@ -86,11 +86,13 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 			if (IsReadOnly == true)
> 				throw new ElementNotEnabledException ();
> 
>-			PerformSetValue (value);
>+			viewItem.ListView.InvokeSync (delegate {
>+				viewItem.Text = value;
>+			});
> 		}
> 		
> 		public bool IsReadOnly {
>-			get { return viewItem.ListView.LabelEdit == false; }
>+			get { return viewItem.ListView.InvokeSync (v => !v.LabelEdit); }
> 		}
> 		
> 		public string Value {
>@@ -98,21 +100,6 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 		}
> 		
> 		#endregion
>-
>-		#region Private Methods
>-
>-		private void PerformSetValue (string value)
>-		{
>-			if (viewItem.ListView.InvokeRequired == true) {
>-				viewItem.ListView.BeginInvoke (new ListItemSetValueDelegate (PerformSetValue),
>-				                               new object [] { value } );
>-				return;
>-			}
>-			
>-			viewItem.Text = value;
>-		}
>-
>-		#endregion
> 		
> 		#region Private Fields
> 		
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/SelectionProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/SelectionProviderBehavior.cs
>index 595e6b7..af2dfcb 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/SelectionProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ListView/SelectionProviderBehavior.cs
>@@ -93,7 +93,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ListView
> 		#region ISelectionProvider Members
> 
> 		public bool CanSelectMultiple {
>-			get { return ((SWF.ListView) Provider.Control).MultiSelect; }
>+			get {
>+				SWF.ListView listview = (SWF.ListView) Provider.Control;
>+				return listview.InvokeSync (c => c.MultiSelect);
>+			}
> 		}
> 
> 		public bool IsSelectionRequired {
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/MaskedTextBox/InsertDeleteTextProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/MaskedTextBox/InsertDeleteTextProviderBehavior.cs
>index 8fb76c4..74a555d 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/MaskedTextBox/InsertDeleteTextProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/MaskedTextBox/InsertDeleteTextProviderBehavior.cs
>@@ -64,103 +64,94 @@ namespace Mono.UIAutomation.Winforms.Behaviors.MaskedTextBox
> 		// rejected as it contains too many characters.
> 		public void InsertText (string str, ref int position)
> 		{
>-			if (maskedTextBox.ReadOnly)
>+			if (maskedTextBox.InvokeSync (m => m.ReadOnly))
> 				throw new ElementNotEnabledException ();
>-
>-			if (Provider.Control.InvokeRequired) {
>-				object[] args = new object[] { str, position };
>-				Provider.Control.BeginInvoke (new InsertTextDelegate (InsertText), args);
>-				position = (int) args[1];
>-				return;
>-			}
>-
>-			System.ComponentModel.MaskedTextProvider prov
>-				= maskedTextBox.MaskedTextProvider;
>-
>-			string text = prov.ToDisplayString ();
>-
>-			int offset = position;
>-			for (int i = 0; i < str.Length; i++) {
>-				int localOffset = offset;
>-				
>-				// skip over an unavailable slot if we see one
>-				bool reachedBounds = false;
>-				while (!prov.IsEditPosition (i + localOffset)) {
>-					localOffset++;
>-					if (i + localOffset >= prov.Length) {
>-						reachedBounds = true;
>+			
>+			int newPosition = position;
>+
>+			maskedTextBox.InvokeSync (delegate {
>+
>+				System.ComponentModel.MaskedTextProvider prov
>+					= maskedTextBox.MaskedTextProvider;
>+	
>+				string text = prov.ToDisplayString ();
>+	
>+				int offset = newPosition;
>+				for (int i = 0; i < str.Length; i++) {
>+					int localOffset = offset;
>+					
>+					// skip over an unavailable slot if we see one
>+					bool reachedBounds = false;
>+					while (!prov.IsEditPosition (i + localOffset)) {
>+						localOffset++;
>+						if (i + localOffset >= prov.Length) {
>+							reachedBounds = true;
>+							break;
>+						}
>+					}
>+	
>+					if (reachedBounds)
> 						break;
>+	
>+					// There is already a character here, so while
>+					// the GUI will actually move this character
>+					// over, we cannot as there are _many, many_
>+					// edge cases that we cannot handle.
>+					// Instead, we skip over the character.
>+					if (!prov.IsAvailablePosition (i + localOffset)) {
>+						// Make sure offset is correct for the
>+						// next iteration
>+						offset = localOffset;
>+						continue;
> 					}
>-				}
>-
>-				if (reachedBounds)
>-					break;
>-
>-				// There is already a character here, so while
>-				// the GUI will actually move this character
>-				// over, we cannot as there are _many, many_
>-				// edge cases that we cannot handle.
>-				// Instead, we skip over the character.
>-				if (!prov.IsAvailablePosition (i + localOffset)) {
>-					// Make sure offset is correct for the
>-					// next iteration
>+	
>+					// The correct value of position is equal to
>+					// the localOffset of the first character.
>+					//
>+					// This check needs to be done after
>+					// IsAvailablePosition in case we are trying to
>+					// insert into a place that already has a
>+					// character.
>+					if (offset != localOffset && i == 0)
>+						newPosition = localOffset;
>+					
> 					offset = localOffset;
>-					continue;
>+	
>+					text = text.Substring (0, i + offset)
>+						+ str[i] + text.Substring (i + offset + 1);
> 				}
> 
>-				// The correct value of position is equal to
>-				// the localOffset of the first character.
>-				//
>-				// This check needs to be done after
>-				// IsAvailablePosition in case we are trying to
>-				// insert into a place that already has a
>-				// character.
>-				if (offset != localOffset && i == 0)
>-					position = localOffset;
>-				
>-				offset = localOffset;
>-
>-				text = text.Substring (0, i + offset)
>-					+ str[i] + text.Substring (i + offset + 1);
>-			}
>-
>-			maskedTextBox.Text = text;
>+				maskedTextBox.Text = text;
>+			});
>+			
>+			position = newPosition;
> 		}
> 
> 		public void DeleteText (int start, int end)
> 		{
>-			if (maskedTextBox.ReadOnly)
>+			if (maskedTextBox.InvokeSync (m => m.ReadOnly))
> 				throw new ElementNotEnabledException ();
> 
>-			if (Provider.Control.InvokeRequired) {
>-				Provider.Control.BeginInvoke (new DeleteTextDelegate (DeleteText),
>-				                              new object [] {start, end});
>-				return;
>-			}
>-
>-			// MaskedTextProvider.RemoveAt does not work for this.
>-			System.ComponentModel.MaskedTextProvider prov
>-				= maskedTextBox.MaskedTextProvider;
>-
>-			string text = prov.ToDisplayString ();
>-			for (int i = start; i < end; i++) {
>-				if (!prov.IsEditPosition (i)
>-				    || prov.IsAvailablePosition (i))
>-					continue;
>-
>-				text = text.Substring (0, i) + prov.PromptChar
>-					+ text.Substring (i + 1);
>-			}
>+			maskedTextBox.InvokeSync (delegate {
>+				// MaskedTextProvider.RemoveAt does not work for this.
>+				System.ComponentModel.MaskedTextProvider prov
>+					= maskedTextBox.MaskedTextProvider;
>+	
>+				string text = prov.ToDisplayString ();
>+				for (int i = start; i < end; i++) {
>+					if (!prov.IsEditPosition (i)
>+					    || prov.IsAvailablePosition (i))
>+						continue;
>+	
>+					text = text.Substring (0, i) + prov.PromptChar
>+						+ text.Substring (i + 1);
>+				}
> 
>-			maskedTextBox.Text = text;
>+				maskedTextBox.Text = text;
>+			});
> 		}
> #endregion
> 
>-#region Private Delegates
>-		private delegate void InsertTextDelegate (string str, ref int position);
>-		private delegate void DeleteTextDelegate (int start, int end);
>-#endregion
>-
> #region Private Fields
> 		private SWF.MaskedTextBox maskedTextBox;
> #endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/MonthCalendar/ButtonInvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/MonthCalendar/ButtonInvokeProviderBehavior.cs
>index c8b4ec4..40996c2 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/MonthCalendar/ButtonInvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/MonthCalendar/ButtonInvokeProviderBehavior.cs
>@@ -72,19 +72,22 @@ namespace Mono.UIAutomation.Winforms.Behaviors.MonthCalendar
> 		
> 		public void Invoke ()
> 		{
>-			if (!Provider.Control.Enabled)
>+			if (Helper.SynchronizedGet<SWF.Control, bool> (Provider.Control, 
>+			                                               c => !c.Enabled))
> 				throw new ElementNotEnabledException ();
> 
> 			SWF.MonthCalendar calendar
> 				= (SWF.MonthCalendar) provider.DataGridProvider.Control;
> 
>-			int offset = 1;
>-			if (provider.Direction
>-				== MonthCalendarButtonProvider.ButtonDirection.Back) {
>-				offset = -1;
>-			}
>-
>-			calendar.CurrentMonth = calendar.CurrentMonth.AddMonths (offset);
>+			Helper.SynchronizedSet (calendar, delegate {
>+				int offset = 1;
>+				if (provider.Direction
>+					== MonthCalendarButtonProvider.ButtonDirection.Back) {
>+					offset = -1;
>+				}
>+	
>+				calendar.CurrentMonth = calendar.CurrentMonth.AddMonths (offset);
>+			});
> 		}
> 		
> #endregion	
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/NumericUpDown/EditableRangeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/NumericUpDown/EditableRangeProviderBehavior.cs
>index 4e36898..81423e3 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/NumericUpDown/EditableRangeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/NumericUpDown/EditableRangeProviderBehavior.cs
>@@ -65,28 +65,24 @@ namespace Mono.UIAutomation.Winforms.Behaviors.NumericUpDown
> 		#region IEditableRange Members
> 		public void BeginEdit (string text)
> 		{
>-			if (numericUpDown.ReadOnly)
>+			if (numericUpDown.InvokeSync (n => numericUpDown.ReadOnly))
> 				throw new ElementNotEnabledException ();
>-			if (numericUpDown.InvokeRequired == true) {
>-				numericUpDown.BeginInvoke (new NumericUpDownBeginEditDelegate (BeginEdit),
>-				                           new object [] { text });
>-				return;
>-			}
>-			numericUpDown.txtView.Text = text;
>+
>+			numericUpDown.InvokeSync (delegate {
>+				numericUpDown.txtView.Text = text;
>+			});
> 		}
> 
> 		public void CommitEdit ()
> 		{
>-			if (numericUpDown.InvokeRequired) {
>-				numericUpDown.BeginInvoke (new NumericUpDownCommitEditDelegate (CommitEdit));
>-				return;
>-			}
>-			decimal value = decimal.Parse (numericUpDown.Text);
>-			if (value < numericUpDown.Minimum)
>-				value = numericUpDown.Minimum;
>-			if (value > numericUpDown.Maximum)
>-				value = numericUpDown.Maximum;
>-			numericUpDown.Value = value;
>+			numericUpDown.InvokeSync (delegate {
>+				decimal value = decimal.Parse (numericUpDown.Text);
>+				if (value < numericUpDown.Minimum)
>+					value = numericUpDown.Minimum;
>+				if (value > numericUpDown.Maximum)
>+					value = numericUpDown.Maximum;
>+				numericUpDown.Value = value;
>+			});
> 		}
> 		#endregion
> 
>@@ -95,8 +91,5 @@ namespace Mono.UIAutomation.Winforms.Behaviors.NumericUpDown
> 		private SWF.NumericUpDown numericUpDown;
> 		
> 		#endregion
>-	}
>-
>-	delegate void NumericUpDownBeginEditDelegate (string value);
>-	delegate void NumericUpDownCommitEditDelegate ();		
>+	}		
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/NumericUpDown/RangeValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/NumericUpDown/RangeValueProviderBehavior.cs
>index deaab01..7ae7683 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/NumericUpDown/RangeValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/NumericUpDown/RangeValueProviderBehavior.cs
>@@ -107,26 +107,26 @@ namespace Mono.UIAutomation.Winforms.Behaviors.NumericUpDown
> 		#region IRangeValueProvider Members
> 	
> 		public bool IsReadOnly {
>-			get { return numericUpDown.ReadOnly; }
>+			get { return numericUpDown.InvokeSync (c => c.ReadOnly); }
> 		}
> 		
> 		public double Minimum {
>-			get { return (double) numericUpDown.Minimum; }
>+			get { return numericUpDown.InvokeSync (c => (double) c.Minimum); }
> 		}
> 		
> 		public double Maximum {
>-			get { return (double) numericUpDown.Maximum; }
>+			get { return numericUpDown.InvokeSync (c => (double) c.Maximum); }
> 		}
> 		
> 		public double LargeChange {
> 			get { return double.NaN; }
> 		}
> 		public double SmallChange {
>-			get { return (double) numericUpDown.Increment; }
>+			get { return numericUpDown.InvokeSync (c => (double) c.Increment); }
> 		}
> 
> 		public double Value {
>-			get { return (double) numericUpDown.Value; }
>+			get { return numericUpDown.InvokeSync (c => (double) c.Value); }
> 		}
> 		
> 		public void SetValue (double value)
>@@ -134,22 +134,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.NumericUpDown
> 			if (value < Minimum || value > Maximum)
> 				throw new ArgumentOutOfRangeException ();
> 
>-			PerformSetValue ((decimal) value);
>-		}
>-
>-		#endregion
>-		
>-
>-		#region Private Methods
>-		
>-		private void PerformSetValue (decimal value) 
>-		{
>-			if (numericUpDown.InvokeRequired == true) {
>-				numericUpDown.BeginInvoke (new NumericUpDownSetValueDelegate (PerformSetValue),
>-				                           new object [] { value });
>-				return;
>-			}
>-			numericUpDown.Value = value;
>+			numericUpDown.InvokeSync (delegate { numericUpDown.Value = (decimal) value; });
> 		}
> 			
> 		#endregion
>@@ -160,6 +145,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.NumericUpDown
> 		
> 		#endregion
> 	}
>-	
>-	delegate void NumericUpDownSetValueDelegate (decimal value);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/PictureBox/EmbeddedImageProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/PictureBox/EmbeddedImageProviderBehavior.cs
>index 1c36400..fc50eed 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/PictureBox/EmbeddedImageProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/PictureBox/EmbeddedImageProviderBehavior.cs
>@@ -63,21 +63,26 @@ namespace Mono.UIAutomation.Winforms.Behaviors.PictureBox
> #region IEmbeddedImageProvider Interface
> 		public Rect Bounds {
> 			get {
>-				if (control.Image == null)
>-					return Rect.Empty;
>-				GraphicsUnit unit = GraphicsUnit.Pixel;
>-				RectangleF rectF = control.Image.GetBounds (ref unit);
>-				if (unit != GraphicsUnit.Pixel)
>-					return Rect.Empty;
>+				return control.InvokeSync (c => {
>+						if (c.Image == null)
>+							return Rect.Empty;
> 
>-				System.Windows.Rect ret
>-					= (System.Windows.Rect) Provider.GetPropertyValue (
>-						AutomationElementIdentifiers.BoundingRectangleProperty.Id);
>-				ret.X += rectF.X;
>-				ret.Y += rectF.Y;
>-				ret.Width = rectF.Width;
>-				ret.Height = rectF.Height;
>-				return ret;
>+						GraphicsUnit unit = GraphicsUnit.Pixel;
>+						RectangleF rectF = c.Image.GetBounds (ref unit);
>+
>+						if (unit != GraphicsUnit.Pixel)
>+							return Rect.Empty;
>+
>+						System.Windows.Rect ret
>+							= (System.Windows.Rect) Provider.GetPropertyValue (
>+								AutomationElementIdentifiers.BoundingRectangleProperty.Id);
>+						ret.X += rectF.X;
>+						ret.Y += rectF.Y;
>+						ret.Width = rectF.Width;
>+						ret.Height = rectF.Height;
>+						return ret;
>+					}
>+				);
> 			}
> 		}
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/PopupButtonPanel/InvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/PopupButtonPanel/InvokeProviderBehavior.cs
>index 8e1e4a1..74f8964 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/PopupButtonPanel/InvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/PopupButtonPanel/InvokeProviderBehavior.cs
>@@ -83,24 +83,11 @@ namespace Mono.UIAutomation.Winforms.Behaviors.PopupButtonPanel
> 			if (Provider.Control.Enabled == false)
> 				throw new ElementNotEnabledException ();
> 
>-			PerformClick ();
>+			Helper.SynchronizedSet (Provider.Control,
>+			                        delegate { button.PerformClick (); });
> 		}
>-		
>+	
> 		#endregion	
>-		
>-		#region Private Methods
>-		
>-		private void PerformClick ()
>-		{
>-			if (Provider.Control.InvokeRequired == true) {
>-				Provider.Control.BeginInvoke (new SWF.MethodInvoker (PerformClick));
>-				return;
>-			}
>-			button.PerformClick ();
>-		}
>-		
>-		#endregion
>-		
> 	}
> 
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ProgressBar/RangeValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ProgressBar/RangeValueProviderBehavior.cs
>index a91c13a..b3f5eae 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ProgressBar/RangeValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ProgressBar/RangeValueProviderBehavior.cs
>@@ -101,7 +101,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ProgressBar
> 		#region IRangeValueProvider Members
> 		
> 		public double Value {
>-			get { return (double) progressBar.Value; }
>+			get { return progressBar.InvokeSync (p => p.Value); }
> 		}
> 		
> 		public bool IsReadOnly {
>@@ -129,13 +129,9 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ProgressBar
> 			if (value < Minimum || value > Maximum)
> 				throw new ArgumentOutOfRangeException ();
> 			
>-			if (progressBar.InvokeRequired == true) {
>-				progressBar.BeginInvoke (new PerformSetValueDelegate (SetValue),
>-				                         new object [] { value });
>-				return;
>-			}
>-			
>-			progressBar.Value = (int) value;
>+			progressBar.InvokeSync (delegate {
>+				progressBar.Value = (int) value;
>+			});
> 		}
> 		
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/PropertyGrid/ListItemChildValueProviderBeahvior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/PropertyGrid/ListItemChildValueProviderBeahvior.cs
>index 487acd9..5dbaff7 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/PropertyGrid/ListItemChildValueProviderBeahvior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/PropertyGrid/ListItemChildValueProviderBeahvior.cs
>@@ -83,7 +83,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.PropertyGrid
> 			if (IsReadOnly)
> 				throw new ElementNotEnabledException ();
> 
>-			PerformSetValue (value);
>+			provider.ListItemProvider.Value = value;
> 		}
> 
> 		public bool IsReadOnly {
>@@ -95,22 +95,8 @@ namespace Mono.UIAutomation.Winforms.Behaviors.PropertyGrid
> 		}
> #endregion
> 
>-#region Private Members
>-		private void PerformSetValue (string value)
>-		{
>-			if (provider.ListItemProvider.PropertyGridView.InvokeRequired) {
>-				provider.ListItemProvider.PropertyGridView.BeginInvoke (
>-					new SetValueDelegate (PerformSetValue),
>-					new object [] { value });
>-				return;
>-			}
>-
>-			provider.ListItemProvider.Value = value;
>-		}
>-
>+#region Private Fields
> 		private PropertyGridListItemValueProvider provider;
>-
>-		private delegate void SetValueDelegate (string val);
> #endregion
> 	}
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/RadioButton/SelectionItemProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/RadioButton/SelectionItemProviderBehavior.cs
>index 8f7cb72..8f72498 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/RadioButton/SelectionItemProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/RadioButton/SelectionItemProviderBehavior.cs
>@@ -120,7 +120,9 @@ namespace Mono.UIAutomation.Winforms.Behaviors.RadioButton
> 
> 		public void Select ()
> 		{
>-			PerformSelectDelegate (radioButton);
>+			radioButton.InvokeSync (delegate {
>+				radioButton.Checked = true;
>+			});
> 		}
> 
> 		public IRawElementProviderSimple SelectionContainer {
>@@ -134,21 +136,5 @@ namespace Mono.UIAutomation.Winforms.Behaviors.RadioButton
> 		}
> 
> #endregion
>-		
>-		#region Private Methods
>-		
>-		private void PerformSelectDelegate (SWF.RadioButton radioButton)
>-		{
>-			if (radioButton.InvokeRequired == true) {
>-				radioButton.BeginInvoke (new PerformSelectDelegate (PerformSelectDelegate),
>-				                         new object [] { radioButton });
>-				return;
>-			}
>-			radioButton.Checked = true;
>-		}
>-		
>-		#endregion 
> 	}
>-	
>-	delegate void PerformSelectDelegate (SWF.RadioButton radioButton);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ScrollBar/ButtonInvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ScrollBar/ButtonInvokeProviderBehavior.cs
>index 8ec2d40..be50ee9 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ScrollBar/ButtonInvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ScrollBar/ButtonInvokeProviderBehavior.cs
>@@ -84,7 +84,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ScrollBar
> 		
> 		public void Invoke ()
> 		{
>-			if (!Provider.Control.Enabled)
>+			if (!Provider.Control.InvokeSync (c => c.Enabled))
> 				throw new ElementNotEnabledException ();
> 
> 			string methodName = string.Empty;
>@@ -103,33 +103,19 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ScrollBar
> 			                                                          | BindingFlags.NonPublic
> 			                                                          | BindingFlags.Instance);
> 			if (methodInfo != null) {
>-				invokeMethod
>+				Action<SWF.ScrollBar> invokeMethod
> 					= (Action<SWF.ScrollBar>) Delegate.CreateDelegate (typeof (Action<SWF.ScrollBar>), 
> 					                                                   methodInfo);
>-				PerformScrollBarButtonClick ();
>+				provider.ScrollBarContainer.InvokeSync (delegate {
>+					invokeMethod (provider.ScrollBarContainer);
>+				});
> 			}
> 		}
> 		
> 		#endregion	
> 		
>-		#region Private Methods
>-		
>-		private void PerformScrollBarButtonClick ()
>-		{
>-	        if (provider.ScrollBarContainer.InvokeRequired == true) {
>-	            provider.ScrollBarContainer.BeginInvoke (new SWF.MethodInvoker (PerformScrollBarButtonClick));
>-	            return;
>-	        }
>-			
>-			invokeMethod (provider.ScrollBarContainer);
>-			invokeMethod = null;
>-		}
>-		
>-		#endregion
>-		
> 		#region Private Fields
> 		
>-		private Action<SWF.ScrollBar> invokeMethod;
> 		private ScrollBarProvider.ScrollBarButtonProvider provider;
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ScrollBar/RangeValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ScrollBar/RangeValueProviderBehavior.cs
>index 69cf126..9394ae7 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ScrollBar/RangeValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ScrollBar/RangeValueProviderBehavior.cs
>@@ -112,48 +112,38 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ScrollBar
> 			if (value < Minimum || value > Maximum)
> 				throw new ArgumentOutOfRangeException ();
> 			
>-			PerformSetValue ((int) value);
>+			scrollbar.InvokeSync (delegate {
>+				scrollbar.Value = (int) value;
>+			});
> 		}
> 		
> 		public bool IsReadOnly {
>-			get { return scrollbar.Enabled == false || scrollbar.Visible == false; }
>+			get {
>+				return scrollbar.InvokeSync (s => !s.Enabled || !s.Visible);
>+			}
> 		}
> 		
> 		public double LargeChange {
>-			get { return scrollbar.LargeChange; }
>+			get { return scrollbar.InvokeSync (s => s.LargeChange); }
> 		}
> 		
> 		public double Maximum {
>-			get { return scrollbar.Maximum; }
>+			get { return scrollbar.InvokeSync (s => s.Maximum); }
> 		}
> 		
> 		public double Minimum {
>-			get { return scrollbar.Minimum; }
>+			get { return scrollbar.InvokeSync (s => s.Minimum); }
> 		}
> 		
> 		public double SmallChange {
>-			get { return scrollbar.SmallChange; }
>+			get { return scrollbar.InvokeSync (s => s.SmallChange); }
> 		}
> 		
> 		public double Value {
>-			get { return scrollbar.Value; }
>+			get { return scrollbar.InvokeSync (s => s.Value); }
> 		}
> 		
> 		#endregion 
>-		
>-		#region Private Methods
>-		
>-		private void PerformSetValue (int value)
>-		{
>-			if (scrollbar.InvokeRequired == true) {
>-				scrollbar.BeginInvoke (new PerformSetValueDelegate (PerformSetValue),
>-				                       new object [] { value });
>-				return;
>-			}
>-			scrollbar.Value = value;
>-		}
>-		
>-		#endregion
> 
> 		#region Private Fields
> 
>@@ -161,6 +151,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ScrollBar
> 
> 		#endregion
> 	}
>-	
>-	delegate void PerformSetValueDelegate (int value);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/SplitContainer/DockProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/SplitContainer/DockProviderBehavior.cs
>index a7be1c1..c880d15 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/SplitContainer/DockProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/SplitContainer/DockProviderBehavior.cs
>@@ -76,20 +76,16 @@ namespace Mono.UIAutomation.Winforms.Behaviors.SplitContainer
> 		#region IDockProvider Members
> 		
> 		public DockPosition DockPosition {
>-			get { return Helper.GetDockPosition (splitContainer.Dock); }
>+			get { return splitContainer.InvokeSync (s => Helper.GetDockPosition (s.Dock)); }
> 		}
> 		
> 		public void SetDockPosition (DockPosition dockPosition)
> 		{
> 			//throw new InvalidOperationException ();
> 			
>-			if (splitContainer.InvokeRequired == true) {
>-				splitContainer.BeginInvoke (new PerformSetDockPositionDelegate (SetDockPosition),
>-				                            new object [] { dockPosition });
>-				return;
>-			}
>-			
>-			splitContainer.Dock = Helper.GetDockStyle (dockPosition);
>+			splitContainer.InvokeSync (delegate {
>+				splitContainer.Dock = Helper.GetDockStyle (dockPosition);
>+			});
> 		}
> 		
> 		#endregion
>@@ -100,6 +96,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.SplitContainer
> 		
> 		#endregion
> 	}
>-	
>-	delegate void PerformSetDockPositionDelegate (DockPosition dockPosition);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/SplitContainer/RangeValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/SplitContainer/RangeValueProviderBehavior.cs
>index ad0644f..e5d099d 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/SplitContainer/RangeValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/SplitContainer/RangeValueProviderBehavior.cs
>@@ -92,11 +92,13 @@ namespace Mono.UIAutomation.Winforms.Behaviors.SplitContainer
> 			if (value < Minimum || value > Maximum)
> 				throw new ArgumentOutOfRangeException ();
> 			
>-			PerformSetValue ((int) value);
>+			splitcontainer.InvokeSync (delegate {
>+				splitcontainer.SplitterDistance = (int) value;
>+			});
> 		}
> 		
> 		public bool IsReadOnly {
>-			get { return splitcontainer.Enabled == false || splitcontainer.Visible == false; }
>+			get { return splitcontainer.InvokeSync (s => !s.Enabled || !s.Visible); }
> 		}
> 		
> 		public double LargeChange {
>@@ -104,11 +106,11 @@ namespace Mono.UIAutomation.Winforms.Behaviors.SplitContainer
> 		}
> 		
> 		public double Maximum {
>-			get { return splitcontainer.Width - (splitcontainer.SplitterWidth + splitcontainer.Panel2MinSize); }
>+			get { return splitcontainer.InvokeSync (s => s.Width - (s.SplitterWidth + s.Panel2MinSize)); }
> 		}
> 		
> 		public double Minimum {
>-			get { return splitcontainer.Panel1MinSize; }
>+			get { return splitcontainer.InvokeSync (s => s.Panel1MinSize); }
> 		}
> 		
> 		public double SmallChange {
>@@ -116,24 +118,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.SplitContainer
> 		}
> 		
> 		public double Value {
>-			get { return splitcontainer.SplitterDistance; }
>+			get { return splitcontainer.InvokeSync (s => s.SplitterDistance); }
> 		}
> 		
> 		#endregion 
>-		
>-		#region Private Methods
>-		
>-		private void PerformSetValue (int value)
>-		{
>-			if (splitcontainer.InvokeRequired == true) {
>-				splitcontainer.BeginInvoke (new PerformSetValueDelegate (PerformSetValue),
>-				                       new object [] { value });
>-				return;
>-			}
>-			splitcontainer.SplitterDistance = value;
>-		}
>-		
>-		#endregion
> 
> 		#region Private Fields
> 
>@@ -141,6 +129,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.SplitContainer
> 
> 		#endregion
> 	}
>-	
>-	delegate void PerformSetValueDelegate (int value);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/SplitContainer/SplitterPanelTransformProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/SplitContainer/SplitterPanelTransformProviderBehavior.cs
>index 9f50f9a..2a822e6 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/SplitContainer/SplitterPanelTransformProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/SplitContainer/SplitterPanelTransformProviderBehavior.cs
>@@ -87,12 +87,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.SplitContainer
> 		}
> 		
> 		public bool CanResize {
>-			get {
>-				if (splitContainer.Panel1Collapsed || splitContainer.Panel2Collapsed)
>-					return false;
>-				else
>-					return true;
>-			}
>+			get { return splitContainer.InvokeSync (s => !(s.Panel1Collapsed || s.Panel2Collapsed)); }
> 		}
> 		
> 		public bool CanRotate {
>@@ -108,17 +103,13 @@ namespace Mono.UIAutomation.Winforms.Behaviors.SplitContainer
> 		{
> 			if (!CanResize)
> 				throw new InvalidOperationException ();
>-			
>-			if (splitContainer.InvokeRequired == true) {
>-				splitContainer.BeginInvoke (new PerformResizeDelegate (Resize),
>-				                            new object [] { width, height });
>-				return;
>-			}
>-			
>-			if (splitContainer.Orientation == SWF.Orientation.Horizontal)
>-				splitContainer.Panel1.Width = (int) width;
>-			else
>-				splitContainer.Panel1.Width = (int) height;
>+
>+			splitContainer.InvokeSync (delegate {
>+				if (splitContainer.Orientation == SWF.Orientation.Horizontal)
>+					splitContainer.Panel1.Width = (int) width;
>+				else
>+					splitContainer.Panel1.Width = (int) height;
>+			});
> 		}
> 		
> 		public void Rotate (double degrees)
>@@ -134,6 +125,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.SplitContainer
> 		
> 		#endregion
> 	}
>-	
>-	delegate void PerformResizeDelegate (double width, double height);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Splitter/DockProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Splitter/DockProviderBehavior.cs
>index 058cc74..442439c 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Splitter/DockProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Splitter/DockProviderBehavior.cs
>@@ -76,7 +76,11 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Splitter
> 		#region IDockProvider Members
> 		
> 		public DockPosition DockPosition {
>-			get { return Helper.GetDockPosition (splitter.Dock); }
>+			get {
>+				return Helper.SynchronizedGet<SWF.Splitter, DockPosition> (
>+					splitter, s => Helper.GetDockPosition (s.Dock)
>+				);
>+			}
> 		}
> 		
> 		public void SetDockPosition (DockPosition dockPosition)
>@@ -85,13 +89,9 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Splitter
> 			    dockPosition == DockPosition.None)
> 				throw new InvalidOperationException ();
> 			
>-			if (splitter.InvokeRequired == true) {
>-				splitter.BeginInvoke (new PerformSetDockPositionDelegate (SetDockPosition),
>-				                      new object [] { dockPosition });
>-				return;
>-			}
>-			
>-			splitter.Dock = Helper.GetDockStyle (dockPosition);
>+			Helper.SynchronizedSet (splitter, delegate {
>+				splitter.Dock = Helper.GetDockStyle (dockPosition);
>+			});
> 		}
> 		
> 		#endregion
>@@ -102,6 +102,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Splitter
> 		
> 		#endregion
> 	}
>-	
>-	delegate void PerformSetDockPositionDelegate (DockPosition dockPosition);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Splitter/RangeValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Splitter/RangeValueProviderBehavior.cs
>index 8a9e84e..a0434fe 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Splitter/RangeValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Splitter/RangeValueProviderBehavior.cs
>@@ -92,11 +92,17 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Splitter
> 			if (value < Minimum || value > Maximum)
> 				throw new ArgumentOutOfRangeException ();
> 			
>-			PerformSetValue ((int) value);
>+			Helper.SynchronizedSet (splitter, delegate {
>+				splitter.SplitPosition = (int) value;
>+			});
> 		}
> 		
> 		public bool IsReadOnly {
>-			get { return splitter.Enabled == false || splitter.Visible == false; }
>+			get {
>+				return Helper.SynchronizedGet<SWF.Splitter, bool> (
>+					splitter, s => !s.Enabled || !s.Visible
>+				);
>+			}
> 		}
> 		
> 		public double LargeChange {
>@@ -104,11 +110,19 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Splitter
> 		}
> 		
> 		public double Maximum {
>-			get { return splitter.MaxSize; }
>+			get {
>+				return Helper.SynchronizedGet<SWF.Splitter, double> (
>+					splitter, s => s.MaxSize
>+				);
>+			}
> 		}
> 		
> 		public double Minimum {
>-			get { return splitter.MinSize; }
>+			get {
>+				return Helper.SynchronizedGet<SWF.Splitter, double> (
>+					splitter, s => s.MinSize
>+				);
>+			}
> 		}
> 		
> 		public double SmallChange {
>@@ -116,31 +130,19 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Splitter
> 		}
> 		
> 		public double Value {
>-			get { return splitter.SplitPosition; }
>+			get {
>+				return Helper.SynchronizedGet<SWF.Splitter, double> (
>+					splitter, s => s.SplitPosition
>+				);
>+			}
> 		}
> 		
> 		#endregion 
> 		
>-		#region Private Methods
>-		
>-		private void PerformSetValue (int value)
>-		{
>-			if (splitter.InvokeRequired == true) {
>-				splitter.BeginInvoke (new PerformSetValueDelegate (PerformSetValue),
>-				                       new object [] { value });
>-				return;
>-			}
>-			splitter.SplitPosition = value;
>-		}
>-		
>-		#endregion
>-
> 		#region Private Fields
> 
> 		private SWF.Splitter splitter;
> 
> 		#endregion
> 	}
>-	
>-	delegate void PerformSetValueDelegate (int value);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Splitter/TransformProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Splitter/TransformProviderBehavior.cs
>index 73a8ade..4c441cf 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Splitter/TransformProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/Splitter/TransformProviderBehavior.cs
>@@ -98,16 +98,12 @@ namespace Mono.UIAutomation.Winforms.Behaviors.Splitter
> 		
> 		public void Move (double x, double y)
> 		{
>-			if (splitter.InvokeRequired == true) {
>-				splitter.BeginInvoke (new PerformMoveDelegate (Move),
>-				                      new object [] { x, y });
>-				return;
>-			}
>-			
>-			if (splitter.Dock == SWF.DockStyle.Left || splitter.Dock == SWF.DockStyle.Right)
>-				splitter.SplitPosition = (int) x;
>-			else
>-				splitter.SplitPosition = (int) y;
>+			Helper.SynchronizedSet (splitter, delegate {
>+				if (splitter.Dock == SWF.DockStyle.Left || splitter.Dock == SWF.DockStyle.Right)
>+					splitter.SplitPosition = (int) x;
>+				else
>+					splitter.SplitPosition = (int) y;
>+			});
> 		}
> 		
> 		public void Resize (double width, double height)
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/StatusBar/GridProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/StatusBar/GridProviderBehavior.cs
>index d433d8d..d6e674e 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/StatusBar/GridProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/StatusBar/GridProviderBehavior.cs
>@@ -86,7 +86,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.StatusBar
> 		}
> 		
> 		public int ColumnCount {
>-			get { return statusBar.Panels.Count; }
>+			get { return statusBar.InvokeSync (s => s.Panels.Count); }
> 		}
> 		
> 		public IRawElementProviderSimple GetItem (int row, int column)
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/StatusBar/StatusBarPanelGridItemProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/StatusBar/StatusBarPanelGridItemProviderBehavior.cs
>index 46507b8..6d3aee0 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/StatusBar/StatusBarPanelGridItemProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/StatusBar/StatusBarPanelGridItemProviderBehavior.cs
>@@ -100,7 +100,9 @@ namespace Mono.UIAutomation.Winforms.Behaviors.StatusBar
> 		}
> 		
> 		public int Column {
>-			get { return statusBarPanel.Parent.Panels.IndexOf (statusBarPanel); }
>+			get {
>+				return statusBarPanel.Parent.InvokeSync (s => s.Panels.IndexOf (statusBarPanel));
>+			}
> 		}
> 		
> 		public int RowSpan {
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/StatusStrip/GridProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/StatusStrip/GridProviderBehavior.cs
>index 2080bf6..cddc7eb 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/StatusStrip/GridProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/StatusStrip/GridProviderBehavior.cs
>@@ -86,7 +86,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.StatusStrip
> 		}
> 		
> 		public int ColumnCount {
>-			get { return statusStrip.Items.Count; }
>+			get { return statusStrip.InvokeSync (s => s.Items.Count); }
> 		}
> 		
> 		public IRawElementProviderSimple GetItem (int row, int column)
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TabControl/ScrollProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TabControl/ScrollProviderBehavior.cs
>index d9af62b..9c7df65 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TabControl/ScrollProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TabControl/ScrollProviderBehavior.cs
>@@ -105,32 +105,35 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TabControl
> 
> 		public double HorizontalScrollPercent {
> 			get {
>-				if (!tabControl.ShowSlider)
>-					return ScrollPatternIdentifiers.NoScroll;
>-				else
>-					return 100 / tabControl.TabCount;
>+				return tabControl.InvokeSync (t => {
>+					if (!t.ShowSlider)
>+						return ScrollPatternIdentifiers.NoScroll;
>+					else
>+						return (double) (100 / t.TabCount);
>+				});
> 			}
> 		}
> 
> 		public double HorizontalViewSize {
> 			get {
>-				if (!tabControl.ShowSlider)
>-					return 100;
>-				else {
>-					// FIXME: remove this when we can depend on MWF > 2.4
>-					try {
>-						return Helper.GetPrivateProperty<SWF.TabControl, double> (tabControl,
>-						                                                          "UIAHorizontalViewSize");
>-					} catch (NotSupportedException) { }
>-					try {
>-						int leftArea =
>-							Helper.GetPrivateProperty<SWF.TabControl, int> (tabControl,
>-							                                                "LeftScrollButtonArea.Left");
>-						return (double) leftArea * 100 / tabControl.TabPages [tabControl.TabCount - 1].TabBounds.Right;
>-					} catch (NotSupportedException) { }
>-					return Double.NaN;
>-				}
>-//					return tabControl.UIAHorizontalViewSize;
>+				return tabControl.InvokeSync (t => {
>+					if (!t.ShowSlider)
>+						return 100;
>+					else {
>+						// FIXME: remove this when we can depend on MWF > 2.4
>+						try {
>+							return Helper.GetPrivateProperty<SWF.TabControl, double> (t, "UIAHorizontalViewSize");
>+						} catch (NotSupportedException) { }
>+						try {
>+							int leftArea =
>+								Helper.GetPrivateProperty<SWF.TabControl, int> (t, "LeftScrollButtonArea.Left");
>+							return (double) leftArea * 100 / t.TabPages [t.TabCount - 1].TabBounds.Right;
>+						} catch (NotSupportedException) { }
>+						return Double.NaN;
>+
>+//						return tabControl.UIAHorizontalViewSize;
>+					}
>+				});
> 			}
> 		}
> 
>@@ -143,7 +146,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TabControl
> 		}
> 
> 		public bool HorizontallyScrollable {
>-			get { return tabControl.ShowSlider; }
>+			get { return tabControl.InvokeSync (t => t.ShowSlider); }
> 		}
> 
> 		public bool VerticallyScrollable {
>@@ -167,13 +170,16 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TabControl
> 			    horizontalAmount == ScrollAmount.SmallIncrement)
> 				throw new ArgumentException ();
> 
>-			// TODO:
>-//			if (horizontalAmount == ScrollAmount.SmallIncrement)
>-//				tabControl.SliderPos += 1;
>-//			else if (horizontalAmount == ScrollAmount.SmallDecrement)
>-//				tabControl.SliderPos -= 1;
>-//			else
>-//				return;
>+/* TODO:
>+			Helper.SynchronizedSet (tabControl, delegate {
>+				if (horizontalAmount == ScrollAmount.SmallIncrement)
>+					tabControl.SliderPos += 1;
>+				else if (horizontalAmount == ScrollAmount.SmallDecrement)
>+					tabControl.SliderPos -= 1;
>+				else
>+					return;
>+			});
>+*/
> 		}
> 
> 		public void SetScrollPercent (double horizontalPercent, double verticalPercent)
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TabPage/SelectionItemProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TabPage/SelectionItemProviderBehavior.cs
>index b78f795..d1f8560 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TabPage/SelectionItemProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TabPage/SelectionItemProviderBehavior.cs
>@@ -111,13 +111,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TabPage
> 			if (IsSelected) {
> 				return;
> 			}
>-			
>-			if (pageProvider.TabControlProvider.Control.InvokeRequired) {
>-				pageProvider.TabControlProvider.Control.BeginInvoke (new MethodInvoker (Select));
>-				return;
>-			}
> 
>-			pageProvider.TabControlProvider.SelectItem (pageProvider);
>+			pageProvider.TabControlProvider.Control.InvokeSync (delegate {
>+				pageProvider.TabControlProvider.SelectItem (pageProvider);
>+			});
> 		}
> 
> 		public bool IsSelected {
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/CaretProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/CaretProviderBehavior.cs
>index d03a0c6..21f4ede 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/CaretProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/CaretProviderBehavior.cs
>@@ -70,31 +70,36 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 			get {
> 				// TODO: This won't scale; we really should
> 				// find a better way of doing it
>-				SWF.Document document = Document;
>-				if (document.caret.line.line_no > document.Lines)
>-					return Text.Length;
>-				return Document.LineTagToCharIndex
>-					(document.caret.line, document.CaretPosition);
>+				return Provider.Control.InvokeSync (c => {
>+						SWF.Document document = Document;
>+						if (document.caret.line.line_no > document.Lines)
>+							return Text.Length;
>+						return Document.LineTagToCharIndex
>+							(document.caret.line, document.CaretPosition);
>+					}
>+				);
> 			}
> 		}
> 
> 		public bool SetCaretOffset (int offset)
> 		{
>-			if (offset < 0)
>-				return false;
>-			SWF.Document document = Document;
>-			int curPos = 0;
>-			SWF.Line line = null;
>-			for (int i = 1;i <= document.Lines;i++) {
>-				line = document.GetLine (i);
>-				int length = line.Text.ToString().Length;
>-				if (curPos + length >= offset) {
>-					document.PositionCaret (line, offset - curPos);
>-					return true;
>+			return Provider.Control.InvokeSync (c => {
>+				if (offset < 0)
>+					return false;
>+				SWF.Document document = Document;
>+				int curPos = 0;
>+				SWF.Line line = null;
>+				for (int i = 1;i <= document.Lines;i++) {
>+					line = document.GetLine (i);
>+					int length = line.Text.ToString().Length;
>+					if (curPos + length >= offset) {
>+						document.PositionCaret (line, offset - curPos);
>+						return true;
>+					}
>+					curPos += length;
> 				}
>-				curPos += length;
>-			}
>-			return false;
>+				return false;
>+			});
> 		}
> 
> 		public string GetSelection (int selectionNum, out int startOffset, out int endOffset)
>@@ -104,9 +109,13 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 				return null;
> 			SWF.TextBoxBase textBoxBase = TextBoxBase;
> 			if (TextBoxBase.Document.SelectionVisible) {
>-				startOffset = textBoxBase.SelectionStart;
>-				endOffset = startOffset + textBoxBase.SelectionLength;
>-				return textBoxBase.Text.Substring (startOffset, endOffset - startOffset);
>+				int sel_start = textBoxBase.InvokeSync (t => t.SelectionStart);
>+				int sel_len = textBoxBase.InvokeSync (t => t.SelectionLength);
>+				string text = Text;
>+
>+				startOffset = sel_start;
>+				endOffset = startOffset + sel_len;
>+				return text.Substring (startOffset, endOffset - startOffset);
> 			}
> 			return null;
> 		}
>@@ -124,7 +133,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 				if (Provider.Control is SWF.TextBoxBase)
> 					return (SWF.TextBoxBase)Provider.Control;
> 				else if (Provider.Control is SWF.UpDownBase)
>-					return ((SWF.UpDownBase)Provider.Control).txtView;
>+					return ((SWF.UpDownBase)Provider.Control).InvokeSync (c => c.txtView);
> 				else
> 					throw new Exception ("TextBoxBase: Unknown type: " + Provider.Control);
> 			}
>@@ -132,12 +141,16 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 
> 		private string Text {
> 			get {
>-				if (TextBoxBase is SWF.MaskedTextBox)
>-					return ((SWF.MaskedTextBox) TextBoxBase).MaskedTextProvider.ToDisplayString ();
>-				else
>-					return TextBoxBase.Text;
>+				if (TextBoxBase is SWF.MaskedTextBox) {
>+					return ((SWF.MaskedTextBox) TextBoxBase).InvokeSync (t => t.MaskedTextProvider.ToDisplayString ());
>+				} else {
>+					return TextBoxBase.InvokeSync (t => t.Text);
>+				}
>+			}
>+			set {
>+				SWF.TextBoxBase textBoxBase = TextBoxBase;
>+				textBoxBase.InvokeSync (delegate { textBoxBase.Text = value; });
> 			}
>-			set { TextBoxBase.Text = value; }
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/ClipboardProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/ClipboardProviderBehavior.cs
>index 4bc3bb0..4a7a6e7 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/ClipboardProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/ClipboardProviderBehavior.cs
>@@ -62,36 +62,40 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 
> 		public void Copy (int start, int end)
> 		{
>-			string text = Text;
>-			start = (int) System.Math.Max (start, 0);
>-			end = (int) System.Math.Min (end, text.Length);
>-			SWF.Clipboard.SetText (text.Substring (start, end - start));
>+			TextBoxBase.InvokeSync (delegate {
>+				string text = Text;
>+				start = (int) System.Math.Max (start, 0);
>+				end = (int) System.Math.Min (end, text.Length);
>+				SWF.Clipboard.SetText (text.Substring (start, end - start));
>+			});
> 		}
> 		
> 		public void Paste (int position)
> 		{
>-			string text = Text;
>-			position = (int) System.Math.Max (position, 0);
>-			position = (int) System.Math.Min (position, text.Length);
>+			TextBoxBase.InvokeSync (delegate {
>+				string text = Text;
>+				position = (int) System.Math.Max (position, 0);
>+				position = (int) System.Math.Min (position, text.Length);
> 
>-			// If you were to paste using the GUI, it would only
>-			// paste enough until the control was full, so emulate
>-			// that behavior.
>-			int maxLength = 0;
>-			if (Provider is TextBoxProvider)
>-				maxLength = ((TextBoxProvider) Provider).MaxLength;
>+				// If you were to paste using the GUI, it would only
>+				// paste enough until the control was full, so emulate
>+				// that behavior.
>+				int maxLength = 0;
>+				if (Provider is TextBoxProvider)
>+					maxLength = ((TextBoxProvider) Provider).MaxLength;
> 
>-			string clipboardText = SWF.Clipboard.GetText ();
>-			if (maxLength > 0 && clipboardText.Length > (maxLength - position))
>-				clipboardText = clipboardText.Substring (0, maxLength - position);
>+				string clipboardText = SWF.Clipboard.GetText ();
>+				if (maxLength > 0 && clipboardText.Length > (maxLength - position))
>+					clipboardText = clipboardText.Substring (0, maxLength - position);
> 
>-			IInsertDeleteTextProvider insertDeleteProv
>-				= Provider.GetPatternProvider (InsertDeleteTextPatternIdentifiers.Pattern.Id)
>-					as IInsertDeleteTextProvider;
>-			if (insertDeleteProv != null)
>-				insertDeleteProv.InsertText (clipboardText, ref position);
>-			else
>-				TextBoxBase.Text = text.Insert (position, clipboardText);
>+				IInsertDeleteTextProvider insertDeleteProv
>+					= Provider.GetPatternProvider (InsertDeleteTextPatternIdentifiers.Pattern.Id)
>+						as IInsertDeleteTextProvider;
>+				if (insertDeleteProv != null)
>+					insertDeleteProv.InsertText (clipboardText, ref position);
>+				else
>+					TextBoxBase.Text = text.Insert (position, clipboardText);
>+			});
> 		}
> 
> 		#endregion
>@@ -101,7 +105,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 				if (Provider.Control is SWF.TextBoxBase)
> 					return (SWF.TextBoxBase)Provider.Control;
> 				else if (Provider.Control is SWF.UpDownBase)
>-					return ((SWF.UpDownBase)Provider.Control).txtView;
>+					return ((SWF.UpDownBase)Provider.Control).InvokeSync (c => c.txtView);
> 				else
> 					throw new Exception ("TextBoxBase: Unknown type: " + Provider.Control);
> 			}
>@@ -110,11 +114,14 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 		private string Text {
> 			get {
> 				if (TextBoxBase is SWF.MaskedTextBox)
>-					return ((SWF.MaskedTextBox) TextBoxBase).MaskedTextProvider.ToDisplayString ();
>+					return ((SWF.MaskedTextBox) TextBoxBase).InvokeSync (c => c.MaskedTextProvider.ToDisplayString ());
> 				else
>-					return TextBoxBase.Text;
>+					return TextBoxBase.InvokeSync (c => c.Text);
>+			}
>+			set {
>+				SWF.TextBoxBase textBoxBase = TextBoxBase;
>+				textBoxBase.InvokeSync (delegate { textBoxBase.Text = value; }); 
> 			}
>-			set { TextBoxBase.Text = value; }
> 		}
> 
> 	}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/TextProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/TextProviderBehavior.cs
>index 8d44865..fcd16ad 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/TextProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/TextProviderBehavior.cs
>@@ -72,7 +72,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 			if (propertyId == AutomationElementIdentifiers.IsPasswordProperty.Id) {
> 				if (Provider.Control is SWF.TextBox) {
> 					SWF.TextBox textbox = TextBox;
>-					return (textbox.UseSystemPasswordChar || (int) textbox.PasswordChar != 0);
>+					return textbox.InvokeSync (c => c.UseSystemPasswordChar || (int) c.PasswordChar != 0);
> 				} else if (Provider.Control is SWF.RichTextBox) {
> 					return false;
> 				}
>@@ -102,17 +102,24 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 				
> 			//TODO: Return null when system cursor is not present, how to?
> 
>-			if (!TextBoxBase.Document.SelectionVisible)
>-				return new ITextRangeProvider [0];
>-
>-			return new ITextRangeProvider [] { 
>-				new TextRangeProvider (this, TextBoxBase, TextBoxBase.SelectionStart, TextBoxBase.SelectionStart + TextBoxBase.SelectionLength) };
>+			return TextBoxBase.InvokeSync (c => {
>+				if (!c.Document.SelectionVisible)
>+					return new ITextRangeProvider [0];
>+	
>+				int sel_len = c.SelectionLength;
>+				int sel_start = c.SelectionStart;
>+	
>+				return new ITextRangeProvider [] { 
>+					new TextRangeProvider (this, TextBoxBase, sel_start, sel_start + sel_len)
>+				};
>+			});
> 		}
> 		
> 		public ITextRangeProvider[] GetVisibleRanges ()
> 		{
> 			int start_line = -1, end_line = -1;
>-			Document.GetVisibleLineIndexes (TextBoxBase.Bounds, out start_line, out end_line);
>+			System.Drawing.Rectangle bounds = TextBoxBase.InvokeSync (c => c.Bounds);
>+			Document.GetVisibleLineIndexes (bounds, out start_line, out end_line);
> 
> 			ITextRangeProvider range = DocumentRange.Clone ();
> 			range.MoveEndpointByUnit (TextPatternRangeEndpoint.Start, TextUnit.Line, start_line);
>@@ -154,7 +161,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 				if (Provider.Control is SWF.TextBoxBase)
> 					return (SWF.TextBoxBase)Provider.Control;
> 				else if (Provider.Control is SWF.UpDownBase)
>-					return ((SWF.UpDownBase)Provider.Control).txtView;
>+					return ((SWF.UpDownBase)Provider.Control).InvokeSync (c => c.txtView);
> 				else
> 					throw new Exception ("TextBoxBase: Unknown type: " + Provider.Control);
> 			}
>@@ -167,9 +174,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 		}
> 
> 		private SWF.Document Document { 
>-			get { return TextBoxBase.Document; }
>+			get { return TextBoxBase.InvokeSync (c => c.Document); }
> 		}
>-
>-
> 	}
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/ValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/ValueProviderBehavior.cs
>index ac1cd8a..cb51235 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/ValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TextBox/ValueProviderBehavior.cs
>@@ -83,19 +83,23 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 		#region IValueProvider: Specialization
> 		
> 		public bool IsReadOnly {
>-			get { return ((SWF.TextBoxBase) Provider.Control).ReadOnly || !Provider.Control.Enabled; }
>+			get {
>+				return ((SWF.TextBoxBase) Provider.Control).InvokeSync (c => c.ReadOnly 
>+				                                                         || !c.Enabled);
>+			}
> 		}
> 		
> 		public string Value {
> 			get {
> 				if (Provider.Control is SWF.MaskedTextBox) {
> 					System.ComponentModel.MaskedTextProvider mtp
>-						= ((SWF.MaskedTextBox) Provider.Control).MaskedTextProvider;
>-					if (mtp != null)
>+						= ((SWF.MaskedTextBox) Provider.Control).InvokeSync (c => c.MaskedTextProvider);
>+					if (mtp != null) {
> 						return mtp.ToDisplayString ();
>+					}
> 				}
> 
>-				return Provider.Control.Text;
>+				return Provider.Control.InvokeSync (c => c.Text);
> 			}
> 		}
> 
>@@ -104,31 +108,17 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TextBox
> 			if (IsReadOnly)
> 				throw new ElementNotEnabledException ();
> 
>-			PerformSetValue (value);
>-		}
>-		
>-		#endregion
>-
>-		#region Private Members
>-		
>-		private void PerformSetValue (string value)
>-		{
>-			if (Provider.Control.InvokeRequired) {
>-				Provider.Control.BeginInvoke (new SetValueDelegate (PerformSetValue),
>-				                              new object [] {value});
>-				return;
>-			}
>-
>-			int maxLength = ((TextBoxProvider) Provider).MaxLength;
>-			if (maxLength > 0
>-			    && value.Length > maxLength) {
>-				value = value.Substring (0, maxLength);
>-			}
>-			
>-			Provider.Control.Text = value;
>+			Provider.Control.InvokeSync (delegate {
>+					int maxLength = ((TextBoxProvider) Provider).MaxLength;
>+					if (maxLength > 0
>+					    && value.Length > maxLength) {
>+						value = value.Substring (0, maxLength);
>+					}
>+					
>+					Provider.Control.Text = value;
>+				}
>+			);
> 		}
>-
>-		private delegate void SetValueDelegate (string val);
> 		
> 		#endregion
> 	}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolBar/ToolBarButtonExpandCollapseProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolBar/ToolBarButtonExpandCollapseProviderBehavior.cs
>index 8cc278d..721d2a0 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolBar/ToolBarButtonExpandCollapseProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolBar/ToolBarButtonExpandCollapseProviderBehavior.cs
>@@ -77,15 +77,15 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolBar
> 		
> 		#region IExpandCollapseProvider Members
> 		
>-		public ExpandCollapseState ExpandCollapseState
>-		{
>+		public ExpandCollapseState ExpandCollapseState {
> 			get {
> 				SWF.Menu menu = toolBarButton.DropDownMenu;
> 				if (menu == null)
> 					return ExpandCollapseState.Collapsed;
> 
>-				return toolBarButton.Pushed ? ExpandCollapseState.Expanded
>-					: ExpandCollapseState.Collapsed;
>+				return toolBar.InvokeSync (t => toolBarButton.Pushed ? ExpandCollapseState.Expanded
>+					                                   : ExpandCollapseState.Collapsed
>+				);
> 			}
> 		}
> 
>@@ -111,16 +111,13 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolBar
> 
> 		private void PerformExpandCollapse ()
> 		{
>-			if (toolBar.InvokeRequired == true) {
>-				toolBar.BeginInvoke (new SWF.MethodInvoker (PerformExpandCollapse));
>-				return;
>-			}
>-
>-			SWF.ContextMenu menu = toolBarButton.DropDownMenu as SWF.ContextMenu;
>-			if (menu == null)
>-				return;
>-			menu.Show (toolBar,
>-			           new Point (toolBarButton.Rectangle.X, toolBar.Height));
>+			toolBar.InvokeSync (delegate {
>+				SWF.ContextMenu menu = toolBarButton.DropDownMenu as SWF.ContextMenu;
>+				if (menu == null)
>+					return;
>+				menu.Show (toolBar,
>+					   new Point (toolBarButton.Rectangle.X, toolBar.Height));
>+			});
> 		}
> 		
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolBar/ToolBarButtonInvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolBar/ToolBarButtonInvokeProviderBehavior.cs
>index 18cb76d..1f0a84a 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolBar/ToolBarButtonInvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolBar/ToolBarButtonInvokeProviderBehavior.cs
>@@ -71,27 +71,18 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolBar
> 		
> 		public void Invoke ()
> 		{
>-			if (toolBar.Enabled == false || toolBarButton.Enabled == false)
>+			bool notEnabled = toolBar.InvokeSync (t => !t.Enabled || !toolBarButton.Enabled);
>+				
>+			if (notEnabled)
> 				throw new ElementNotEnabledException ();
> 
>-			PerformClick ();
>+			toolBar.InvokeSync (delegate {
>+				toolBar.UIAPerformClick (toolBarButton);
>+			});
> 		}
> 		
> 		#endregion
> 
>-		#region Private Methods
>-
>-		private void PerformClick ()
>-		{
>-			if (toolBar.InvokeRequired == true) {
>-				toolBar.BeginInvoke (new SWF.MethodInvoker (PerformClick));
>-				return;
>-			}
>-
>-			toolBarButton.Parent.UIAPerformClick (toolBarButton);
>-		}
>-		#endregion
>-
> 		#region Private Fields
> 
> 		private SWF.ToolBarButton toolBarButton;
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolBar/ToolBarButtonToggleProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolBar/ToolBarButtonToggleProviderBehavior.cs
>index c2200bc..a36f14a 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolBar/ToolBarButtonToggleProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolBar/ToolBarButtonToggleProviderBehavior.cs
>@@ -79,7 +79,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolBar
> 		public ToggleState ToggleState
> 		{
> 			get {
>-				if (toolBarButton.Pushed)
>+				if (toolBar.InvokeSync (t => toolBarButton.Pushed))
> 					return ToggleState.On;
> 				else
> 					return ToggleState.Off;
>@@ -91,21 +91,9 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolBar
> 			if (!toolBarButton.Enabled)
> 				throw new ElementNotEnabledException ();
> 
>-			PerformToggle ();
>-		}
>-		
>-		#endregion
>-
>-		#region Private Methods
>-
>-		private void PerformToggle ()
>-		{
>-			if (toolBar.InvokeRequired == true) {
>-				toolBar.BeginInvoke (new SWF.MethodInvoker (PerformToggle));
>-				return;
>-			}
>-
>-			toolBar.UIAPerformClick (toolBarButton);
>+			toolBar.InvokeSync (delegate {
>+				toolBar.UIAPerformClick (toolBarButton);
>+			});
> 		}
> 		
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripButton/InvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripButton/InvokeProviderBehavior.cs
>index 3a2c891..9bfc718 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripButton/InvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripButton/InvokeProviderBehavior.cs
>@@ -71,17 +71,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolStripButton
> 			if (button.Enabled == false)
> 				throw new ElementNotEnabledException ();
> 
>-			PerformClick ();
>-		}
>-
>-		private void PerformClick ()
>-		{
>-			SWF.ToolStrip toolstrip = ((SWF.ToolStripButton)Provider.Component).Owner;
>-			if (toolstrip.InvokeRequired == true) {
>-				toolstrip.BeginInvoke (new SWF.MethodInvoker (PerformClick));
>-				return;
>-			}
>-			button.PerformClick ();
>+			SWF.ToolStrip toolstrip = ((SWF.ToolStripButton) Provider.Component).Owner;
>+			toolstrip.InvokeSync (delegate {
>+				button.PerformClick ();
>+			});
> 		}
> #endregion	
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripButton/ToggleProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripButton/ToggleProviderBehavior.cs
>index c18c20f..9da21b8 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripButton/ToggleProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripButton/ToggleProviderBehavior.cs
>@@ -74,7 +74,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolStripButton
> #region IToggleProvider Members
> 		public ToggleState ToggleState {
> 			get {
>-				switch (button.CheckState) {
>+				SWF.CheckState state =
>+					Owner.InvokeSync (delegate { return button.CheckState; });
>+
>+				switch (state) {
> 				case SWF.CheckState.Checked:
> 					return ToggleState.On;
> 				case SWF.CheckState.Unchecked:
>@@ -91,7 +94,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolStripButton
> 			if (!button.Enabled)
> 				throw new ElementNotEnabledException ();
> 
>-			switch (button.CheckState) {
>+			SWF.CheckState state =
>+				Owner.InvokeSync (delegate { return button.CheckState; });
>+
>+			switch (state) {
> 			case SWF.CheckState.Checked:
> 				PerformToggle (button, SWF.CheckState.Unchecked);
> 				break;
>@@ -109,14 +115,15 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolStripButton
> #region Private Methods
> 		private void PerformToggle (SWF.ToolStripButton button, SWF.CheckState state)
> 		{
>-			SWF.ToolStrip toolstrip = ((SWF.ToolStripButton) Provider.Component).Owner;
>-			if (toolstrip.InvokeRequired) {
>-				toolstrip.BeginInvoke (new PerformToggleDelegate (PerformToggle),
>-				                       new object [] { button, state });
>-				return;
>-			}
>+			Owner.InvokeSync (delegate {
>+				button.CheckState = state;
>+			});
>+		}
>+#endregion
> 
>-			button.CheckState = state;
>+#region Private Properties
>+		private SWF.ToolStrip Owner {
>+			get { return ((SWF.ToolStripButton) Provider.Component).Owner; }
> 		}
> #endregion
> 
>@@ -124,6 +131,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolStripButton
> 		private SWF.ToolStripButton button;
> #endregion
> 	}
>-
>-	delegate void PerformToggleDelegate (SWF.ToolStripButton button, SWF.CheckState state);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripItem/InvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripItem/InvokeProviderBehavior.cs
>index 3726871..24686d5 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripItem/InvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripItem/InvokeProviderBehavior.cs
>@@ -44,7 +44,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolStripItem
> 		ToolStripItemProvider itemProvider;
> 
> 		#endregion
>-
>+		
> 		#region Constructor
> 		
> 		public InvokeProviderBehavior (ToolStripItemProvider provider)
>@@ -82,49 +82,58 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolStripItem
> 			if (((SWF.ToolStripItem)Provider.Component).Enabled == false)
> 				throw new ElementNotEnabledException ();
> 
>-			PerformClick ();
>+			SynchronizedPerformClick ();
> 		}
> 		
> 		#endregion	
> 		
> 		#region Private Methods
> 		
>-		private void PerformClick ()
>+		private void SynchronizedPerformClick ()
> 		{
> 			SWF.ToolStripItem item = (SWF.ToolStripItem) Provider.Component;
>-			if (item.Owner != null && item.Owner.InvokeRequired) {
>-				item.Owner.BeginInvoke (new SWF.MethodInvoker (PerformClick));
>-				return;
>-			}
>+			if (item.Owner != null)
>+				item.Owner.InvokeSync (delegate { 
>+					PerformClick (item); 
>+				});
>+			else // Hopefully we shouldn't have any issue
>+				PerformClick (item);
>+		}
> 
>-			var currentParent = item.OwnerItem as SWF.ToolStripMenuItem;
>+		private void PerformClick (SWF.ToolStripItem item)
>+		{
>+			SWF.ToolStrip currentParent = item.GetCurrentParent ();
> 
> 			// Invoking without a visible parent results in exceptions
>-			if (currentParent != null && !currentParent.DropDown.Visible)
>+			if (currentParent == null || !currentParent.Visible)
> 				return;
> 
>-			var dropdown = item as SWF.ToolStripDropDownItem;
>-			bool hide = false;
>-			if (dropdown != null)
>-				hide = dropdown.Pressed;
>-
> 			// Make sure selection changes, or else another item's
> 			// dropdown menu might still appear.
> 			if (item.Owner != null)
> 				item.Select ();
>-
>-			item.PerformClick ();
>-
>+			
> 			// PerformClick does _not_ show/hide the DropDown, so
> 			// we must do this manually.  On Vista, clicking the
> 			// button appears to both Show the drop down and
> 			// Perform a click, so we emulate that behavior.
>-			if (dropdown != null && !(item is SWF.ToolStripSplitButton)) {
>-				if (hide)
>-					dropdown.HideDropDown ();
>-				else
>-					dropdown.ShowDropDown ();
>+			if (item is SWF.ToolStripDropDownButton) {
>+				SWF.ToolStripDropDownButton dropDown = (SWF.ToolStripDropDownButton) item;
>+				if (!dropDown.Pressed) {
>+					dropDown.ShowDropDown ();
>+				} else {
>+					dropDown.HideDropDown ();
>+				}
>+			} else if (item is SWF.ToolStripMenuItem) {
>+				SWF.ToolStripMenuItem menuItem = (SWF.ToolStripMenuItem) item;
>+				if (!menuItem.Pressed) {
>+					menuItem.ShowDropDown ();
>+				} else {
>+					menuItem.HideDropDown ();
>+				}
> 			}
>+
>+			item.PerformClick ();
> 		}
> 		
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripSplitButton/ExpandCollapseProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripSplitButton/ExpandCollapseProviderBehavior.cs
>index eb87b57..34a5cb8 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripSplitButton/ExpandCollapseProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/ToolStripSplitButton/ExpandCollapseProviderBehavior.cs
>@@ -77,19 +77,30 @@ namespace Mono.UIAutomation.Winforms.Behaviors.ToolStripSplitButton
> 				if (dropdown == null)
> 					return ExpandCollapseState.Collapsed;
> 
>-				return dropdown.Visible ? ExpandCollapseState.Expanded
>-				                        : ExpandCollapseState.Collapsed;
>+				return Owner.InvokeSync (o => dropdown.Visible ? ExpandCollapseState.Expanded
>+				                                     : ExpandCollapseState.Collapsed
>+				);
> 			}
> 		}
> 
> 		public void Collapse ()
> 		{
>-			((SWF.ToolStripSplitButton) Provider.Component).HideDropDown ();
>+			Owner.InvokeSync (delegate {
>+				((SWF.ToolStripSplitButton) Provider.Component).HideDropDown ();
>+			});
> 		}
> 
> 		public void Expand ()
> 		{
>-			((SWF.ToolStripSplitButton) Provider.Component).ShowDropDown ();
>+			Owner.InvokeSync (delegate {
>+				((SWF.ToolStripSplitButton) Provider.Component).ShowDropDown ();
>+			});
>+		}
>+#endregion
>+
>+#region Private Properties
>+		private SWF.ToolStrip Owner {
>+			get { return ((SWF.ToolStripItem) Provider.Component).Owner; }
> 		}
> #endregion
> 	}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TrackBar/ButtonInvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TrackBar/ButtonInvokeProviderBehavior.cs
>index 79d1533..9f96076 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TrackBar/ButtonInvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TrackBar/ButtonInvokeProviderBehavior.cs
>@@ -84,18 +84,15 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TrackBar
> 		
> 		public void Invoke ()
> 		{
>-			if (!Provider.Control.Enabled)
>+			if (Provider.Control.InvokeSync (c => !c.Enabled))
> 				throw new ElementNotEnabledException ();
> 
>-	        if (provider.Control.InvokeRequired == true) {
>-	            provider.Control.BeginInvoke (new SWF.MethodInvoker (Invoke));
>-	            return;
>-	        }
>-
>- 			if (provider.Orientation == TrackBarProvider.TrackBarButtonOrientation.LargeBack)
>-				((SWF.TrackBar)Provider.Control).LargeDecrement ();
>-			else if (provider.Orientation == TrackBarProvider.TrackBarButtonOrientation.LargeForward)
>-				((SWF.TrackBar)Provider.Control).LargeIncrement ();
>+			Provider.Control.InvokeSync (delegate {
>+				if (provider.Orientation == TrackBarProvider.TrackBarButtonOrientation.LargeBack)
>+					((SWF.TrackBar)Provider.Control).LargeDecrement ();
>+				else if (provider.Orientation == TrackBarProvider.TrackBarButtonOrientation.LargeForward)
>+					((SWF.TrackBar)Provider.Control).LargeIncrement ();
>+			});
> 		}
> 		
> 		#endregion	
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TrackBar/RangeValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TrackBar/RangeValueProviderBehavior.cs
>index bccefb5..0d1b3c2 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TrackBar/RangeValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TrackBar/RangeValueProviderBehavior.cs
>@@ -112,48 +112,36 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TrackBar
> 			if (value < Minimum || value > Maximum)
> 				throw new ArgumentOutOfRangeException ();
> 			
>-			PerformSetValue ((int) value);
>+			trackbar.InvokeSync (delegate {
>+				trackbar.Value = (int) value;
>+			});
> 		}
> 		
> 		public bool IsReadOnly {
>-			get { return trackbar.Enabled == false || trackbar.Visible == false; }
>+			get { return trackbar.InvokeSync (t => !t.Enabled || !t.Visible); }
> 		}
> 		
> 		public double LargeChange {
>-			get { return trackbar.LargeChange; }
>+			get { return trackbar.InvokeSync (t => t.LargeChange); }
> 		}
> 		
> 		public double Maximum {
>-			get { return trackbar.Maximum; }
>+			get { return trackbar.InvokeSync (t => t.Maximum); }
> 		}
> 		
> 		public double Minimum {
>-			get { return trackbar.Minimum; }
>+			get { return trackbar.InvokeSync (t => t.Minimum); }
> 		}
> 		
> 		public double SmallChange {
>-			get { return trackbar.SmallChange; }
>+			get { return trackbar.InvokeSync (t => t.SmallChange); }
> 		}
> 		
> 		public double Value {
>-			get { return trackbar.Value; }
>+			get { return trackbar.InvokeSync (t => t.Value); }
> 		}
> 		
> 		#endregion 
>-		
>-		#region Private Methods
>-		
>-		private void PerformSetValue (int value)
>-		{
>-			if (trackbar.InvokeRequired == true) {
>-				trackbar.BeginInvoke (new PerformSetValueDelegate (PerformSetValue),
>-				                       new object [] { value });
>-				return;
>-			}
>-			trackbar.Value = value;
>-		}
>-		
>-		#endregion
> 
> 		#region Private Fields
> 
>@@ -161,6 +149,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TrackBar
> 
> 		#endregion
> 	}
>-	
>-	delegate void PerformSetValueDelegate (int value);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ExpandCollapeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ExpandCollapeProviderBehavior.cs
>index 3af422a..c2b3bad 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ExpandCollapeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ExpandCollapeProviderBehavior.cs
>@@ -93,12 +93,9 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TreeView
> 			if (!treeView.Enabled)
> 				throw new ElementNotEnabledException ();
> 			
>-			if (treeView != null && treeView.InvokeRequired) {
>-				treeView.BeginInvoke (new SWF.MethodInvoker (PerformCollapse));
>-				return;
>-			}
>-
>-			PerformCollapse ();
>+			Helper.SynchronizedSet (treeView, delegate {
>+				nodeProvider.TreeNode.Collapse ();
>+			});
> 		}
> 		
> 		public void Expand ()
>@@ -110,13 +107,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TreeView
> 
> 			if (!treeView.Enabled)
> 				throw new ElementNotEnabledException ();
>-			
>-			if (treeView != null && treeView.InvokeRequired) {
>-				treeView.BeginInvoke (new SWF.MethodInvoker (PerformExpand));
>-				return;
>-			}
> 
>-			PerformExpand ();
>+			Helper.SynchronizedSet (treeView, delegate {
>+				nodeProvider.TreeNode.Expand ();
>+			});
> 		}
> 		
> 		public ExpandCollapseState ExpandCollapseState {
>@@ -131,19 +125,5 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TreeView
> 		}
> 		
> 		#endregion
>-
>-		#region Private Methods
>-
>-		private void PerformCollapse ()
>-		{
>-			nodeProvider.TreeNode.Collapse ();
>-		}
>-
>-		private void PerformExpand ()
>-		{
>-			nodeProvider.TreeNode.Expand ();
>-		}
>-
>-		#endregion
> 	}
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ScrollItemProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ScrollItemProviderBehavior.cs
>index 69687fc..589deff 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ScrollItemProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ScrollItemProviderBehavior.cs
>@@ -82,10 +82,10 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TreeView
> 				Log.Error ("TreeView.ScrollItem.ScrollIntoView: Parent TreeView is not set");
> 				return;
> 			}
>-			if (treeView.InvokeRequired)
>-				treeView.BeginInvoke (new SWF.MethodInvoker (ScrollIntoView));
> 
>-			nodeProvider.TreeNode.EnsureVisible ();
>+			Helper.SynchronizedSet (treeView, delegate {
>+				nodeProvider.TreeNode.EnsureVisible ();
>+			});
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/SelectionItemProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/SelectionItemProviderBehavior.cs
>index 7263582..fc1e95c 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/SelectionItemProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/SelectionItemProviderBehavior.cs
>@@ -93,18 +93,21 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TreeView
> 				Log.Error ("TreeView.SelectionItem.Select: Parent TreeView is not set");
> 				return;
> 			}
>+
> 			if (!treeView.Enabled)
> 				throw new ElementNotEnabledException ();
>-			if (treeView.InvokeRequired) {
>-				treeView.BeginInvoke (new SWF.MethodInvoker (Select));
>-				return;
>-			}
>-			treeView.SelectedNode = nodeProvider.TreeNode;
>+
>+			Helper.SynchronizedSet (treeView, delegate {
>+				treeView.SelectedNode = nodeProvider.TreeNode;
>+			});
> 		}
> 		
> 		public bool IsSelected {
> 			get {
>-				return nodeProvider.TreeNode.IsSelected;
>+				return Helper.SynchronizedGet<SWF.TreeView, bool> (
>+					nodeProvider.TreeNode.TreeView,
>+					t => nodeProvider.TreeNode.IsSelected
>+				);
> 			}
> 		}
> 		
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/SelectionProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/SelectionProviderBehavior.cs
>index 0ae1628..c6a5368 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/SelectionProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/SelectionProviderBehavior.cs
>@@ -92,7 +92,7 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TreeView
> 		
> 		public IRawElementProviderSimple [] GetSelection ()
> 		{
>-			SWF.TreeNode selectedNode = treeView.SelectedNode;
>+			SWF.TreeNode selectedNode = treeView.InvokeSync (c => c.SelectedNode);
> 			TreeNodeProvider selectedNodeProvider = null;
> 			
> 			if (selectedNode != null)
>@@ -105,14 +105,12 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TreeView
> 		}
> 		
> 		public bool CanSelectMultiple {
>-			get {
>-				return false;
>-			}
>+			get { return false; }
> 		}
> 		
> 		public bool IsSelectionRequired {
> 			get {
>-				return treeView.SelectedNode != null;
>+				return treeView.InvokeSync (t => t.SelectedNode != null);
> 			}
> 		}
> 		
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ToggleProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ToggleProviderBehavior.cs
>index 6f1e0e3..47bcb83 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ToggleProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ToggleProviderBehavior.cs
>@@ -62,12 +62,13 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TreeView
> 				Log.Error ("TreeView.Toggle.Invoke: Parent TreeView is not set");
> 				return;
> 			}
>+
> 			if (!treeView.Enabled)
> 				throw new ElementNotEnabledException ();
>-			if (treeView.InvokeRequired)
>-				treeView.BeginInvoke (new SWF.MethodInvoker (Toggle));
> 			
>-			nodeProvider.TreeNode.Checked = !nodeProvider.TreeNode.Checked;
>+			Helper.SynchronizedSet (treeView, delegate {
>+				nodeProvider.TreeNode.Checked = !nodeProvider.TreeNode.Checked;
>+			});
> 		}
> 		
> 		public ToggleState ToggleState {
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ValueProviderBehavior.cs
>index 62fc390..5a0b421 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/TreeView/ValueProviderBehavior.cs
>@@ -93,39 +93,28 @@ namespace Mono.UIAutomation.Winforms.Behaviors.TreeView
> 				Log.Error ("TreeView.Value.SetValue: Parent TreeView is not set");
> 				return;
> 			}
>+
> 			if (!treeView.Enabled)
> 				throw new ElementNotEnabledException ();
>-			if (treeView.InvokeRequired) {
>-				treeView.BeginInvoke (new SetValueDelegate (PerformSetValue),
>-				                      new object [] {val});
>-				return;
>-			}
>-			PerformSetValue (val);
>+
>+			Helper.SynchronizedSet (treeView, delegate {
>+				nodeProvider.TreeNode.Text = val;
>+			});
> 		}
> 		
> 		public bool IsReadOnly {
>-			get {
>-				return false;
>-			}
>+			get { return false; }
> 		}
> 		
> 		public string Value {
> 			get {
>-				return nodeProvider.TreeNode.Text;
>+				return Helper.SynchronizedGet<SWF.TreeView, string> (
>+					nodeProvider.TreeNode.TreeView,
>+					t => nodeProvider.TreeNode.Text
>+				);
> 			}
> 		}
> 		
> 		#endregion
>-
>-		#region Private Methods
>-
>-		private void PerformSetValue (string val)
>-		{
>-			nodeProvider.TreeNode.Text = val;
>-		}
>-
>-		private delegate void SetValueDelegate (string val);
>-
>-		#endregion
> 	}
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/UpDownBase/ButtonInvokeProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/UpDownBase/ButtonInvokeProviderBehavior.cs
>index 13a5067..745507f 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/UpDownBase/ButtonInvokeProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/UpDownBase/ButtonInvokeProviderBehavior.cs
>@@ -69,20 +69,12 @@ namespace Mono.UIAutomation.Winforms.Behaviors.UpDownBase
> 		
> 		public void Invoke ()
> 		{
>-			if (provider.UpDownBase.InvokeRequired) {
>-				provider.UpDownBase.BeginInvoke (new SWF.MethodInvoker (PerformInvoke));
>-				return;
>-			}
>-
>-			PerformInvoke ();
>-		}
>-
>-		private void PerformInvoke ()
>-		{
>-			if (provider.Orientation == UpDownBaseProvider.UpDownBaseButtonOrientation.Forward)
>-				provider.UpDownBase.UpButton ();
>-			else if (provider.Orientation == UpDownBaseProvider.UpDownBaseButtonOrientation.Backward)
>-				provider.UpDownBase.DownButton ();
>+			provider.UpDownBase.InvokeSync (delegate {
>+				if (provider.Orientation == UpDownBaseProvider.UpDownBaseButtonOrientation.Forward)
>+					provider.UpDownBase.UpButton ();
>+				else if (provider.Orientation == UpDownBaseProvider.UpDownBaseButtonOrientation.Backward)
>+					provider.UpDownBase.DownButton ();
>+			});
> 		}
> 		
> 		#endregion
>@@ -93,4 +85,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.UpDownBase
> 		
> 		#endregion
> 	}
>-}
>\ No newline at end of file
>+}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/UpDownBase/ValueProviderBehavior.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/UpDownBase/ValueProviderBehavior.cs
>index acb9c07..80ad7ca 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/UpDownBase/ValueProviderBehavior.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Behaviors/UpDownBase/ValueProviderBehavior.cs
>@@ -82,34 +82,19 @@ namespace Mono.UIAutomation.Winforms.Behaviors.UpDownBase
> 		#region IValueProvider Members
> 		
> 		public bool IsReadOnly {
>-			get { return upDownBase.ReadOnly; }
>+			get { return upDownBase.InvokeSync (c => c.ReadOnly); }
> 		}
> 		
> 		public string Value {
>-			get { return upDownBase.Text; }
>+			get { return upDownBase.InvokeSync (c => c.Text); }
> 		}
> 		
> 		public void SetValue (string value)
> 		{
>-			if (!upDownBase.Enabled || upDownBase.ReadOnly)
>+			if (upDownBase.InvokeSync (c => !c.Enabled || c.ReadOnly))
> 				throw new ElementNotEnabledException ();
>-			
>-			PerformSetValue (value);
>-		}
>-		
>-		#endregion
>-		
>-		#region Private Methods
>-		
>-		private void PerformSetValue (string value) 
>-		{
>-			if (upDownBase.InvokeRequired == true) {
>-				upDownBase.BeginInvoke (new UpDownBaseSetValueDelegate (PerformSetValue),
>-				                          new object [] { value } );
>-				return;
>-			}
>-			
>-			upDownBase.Text = value;
>+
>+			upDownBase.InvokeSync (delegate { upDownBase.Text = value; });
> 		}
> 		
> 		#endregion
>@@ -120,6 +105,4 @@ namespace Mono.UIAutomation.Winforms.Behaviors.UpDownBase
> 		
> 		#endregion
> 	}
>-	
>-	delegate void UpDownBaseSetValueDelegate (string value);
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/AutomationIsOffscreenPropertyEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/AutomationIsOffscreenPropertyEvent.cs
>index da892d1..081306b 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/AutomationIsOffscreenPropertyEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/AutomationIsOffscreenPropertyEvent.cs
>@@ -48,22 +48,26 @@ namespace Mono.UIAutomation.Winforms.Events
> 		
> 		public override void Connect ()
> 		{
>-			Provider.Control.Resize += new EventHandler (OnIsOffScreen);
>-			Provider.Control.LocationChanged += new EventHandler (OnIsOffScreen);
>-			if (Provider.Control.Parent != null)
>-				Provider.Control.Parent.LocationChanged += new EventHandler (OnIsOffScreen);
>-			if (Provider.Control.FindForm () != null)
>+			Provider.Control.InvokeSync (delegate {
>+				Provider.Control.Resize += new EventHandler (OnIsOffScreen);
>+				Provider.Control.LocationChanged += new EventHandler (OnIsOffScreen);
>+				if (Provider.Control.Parent != null)
>+					Provider.Control.Parent.LocationChanged += new EventHandler (OnIsOffScreen);
>+				if (Provider.Control.FindForm () != null)
> 				Provider.Control.FindForm ().Resize += new EventHandler (OnIsOffScreen);
>+			});
> 		}
> 
> 		public override void Disconnect ()
> 		{
>-			Provider.Control.Resize -= new EventHandler (OnIsOffScreen);
>-			Provider.Control.LocationChanged -= new EventHandler (OnIsOffScreen);
>-			if (Provider.Control.Parent != null)
>-				Provider.Control.Parent.LocationChanged -= new EventHandler (OnIsOffScreen);
>-			if (Provider.Control.FindForm () != null)
>+			Provider.Control.InvokeSync (delegate {
>+				Provider.Control.Resize -= new EventHandler (OnIsOffScreen);
>+				Provider.Control.LocationChanged -= new EventHandler (OnIsOffScreen);
>+				if (Provider.Control.Parent != null)
>+					Provider.Control.Parent.LocationChanged -= new EventHandler (OnIsOffScreen);
>+				if (Provider.Control.FindForm () != null)
> 				Provider.Control.FindForm ().Resize -= new EventHandler (OnIsOffScreen);
>+			});
> 		}
> 		
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/AutomationIsPatternAvailablePropertyEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/AutomationIsPatternAvailablePropertyEvent.cs
>index ee4a9a4..6339289 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/AutomationIsPatternAvailablePropertyEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/AutomationIsPatternAvailablePropertyEvent.cs
>@@ -116,7 +116,6 @@ namespace Mono.UIAutomation.Winforms.Events
> 					return;
> 				
> 				bool newValue = val ?? false;
>-				
> 				AutomationPropertyChangedEventArgs args 
> 					= new AutomationPropertyChangedEventArgs (property,
> 					                                          !newValue,
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/BaseAutomationEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/BaseAutomationEvent.cs
>index 28dd59f..61157a9 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/BaseAutomationEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/BaseAutomationEvent.cs
>@@ -55,11 +55,14 @@ namespace Mono.UIAutomation.Winforms.Events
> 		protected void RaiseAutomationEvent ()
> 		{
> 			if (AutomationInteropProvider.ClientsAreListening == true) {
>-				AutomationEventArgs args = 
>-					new AutomationEventArgs (Event);
>-				AutomationInteropProvider.RaiseAutomationEvent (Event, 
>-				                                                Provider, 
>-				                                                args);
>+//				Helper.DelegateQueue.Get ().Enqueue (delegate {
>+//				System.Threading.ThreadPool.QueueUserWorkItem (v => {
>+					AutomationEventArgs args = 
>+						new AutomationEventArgs (Event);
>+					AutomationInteropProvider.RaiseAutomationEvent (Event, 
>+					                                                Provider, 
>+					                                                args);
>+//				});
> 			}
> 		}
> 		
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/ListItemSelectionItemPatternElementSelectedEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/ListItemSelectionItemPatternElementSelectedEvent.cs
>index 93a84de..cb97fa4 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/ListItemSelectionItemPatternElementSelectedEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/ListItemSelectionItemPatternElementSelectedEvent.cs
>@@ -50,16 +50,10 @@ namespace Mono.UIAutomation.Winforms.Events.ComboBox
> 		{
> 			((SWF.ComboBox) Provider.Control).SelectedIndexChanged 
> 				+= new EventHandler (OnElementSelectedEvent);
>-			if (Provider.Control is SWF.DirComboBox)
>-				((SWF.ComboBox) Provider.Control).SelectedValueChanged 
>-					+= new EventHandler (OnElementSelectedEvent);
> 		}
> 
> 		public override void Disconnect ()
> 		{
>-			if (Provider.Control is SWF.DirComboBox)
>-				((SWF.ComboBox) Provider.Control).SelectedValueChanged 
>-					-= new EventHandler (OnElementSelectedEvent);
> 			((SWF.ComboBox) Provider.Control).SelectedIndexChanged 
> 				-= new EventHandler (OnElementSelectedEvent);
> 		}
>@@ -72,7 +66,7 @@ namespace Mono.UIAutomation.Winforms.Events.ComboBox
> 		{
> 			ListItemProvider provider = (ListItemProvider) Provider;
> 			
>-			if (provider.Index == ((SWF.ComboBox) provider.Control).SelectedIndex)
>+			if (provider.Index == ((SWF.ComboBox) provider.Control).InvokeSync (c => c.SelectedIndex))
> 				RaiseAutomationEvent ();
> 		}
> 		
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/ListItemSelectionItemPatternIsSelectedEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/ListItemSelectionItemPatternIsSelectedEvent.cs
>index 7101bc0..4d0f665 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/ListItemSelectionItemPatternIsSelectedEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/ListItemSelectionItemPatternIsSelectedEvent.cs
>@@ -50,16 +50,10 @@ namespace Mono.UIAutomation.Winforms.Events.ComboBox
> 		{
> 			((SWF.ComboBox) Provider.Control).SelectedIndexChanged 
> 				+= new EventHandler (OnElementSelectedEvent);
>-			if (Provider.Control is SWF.DirComboBox)
>-				((SWF.ComboBox) Provider.Control).SelectedValueChanged 
>-					+= new EventHandler (OnElementSelectedEvent);
> 		}
> 
> 		public override void Disconnect ()
> 		{
>-			if (Provider.Control is SWF.DirComboBox)
>-				((SWF.ComboBox) Provider.Control).SelectedValueChanged 
>-					-= new EventHandler (OnElementSelectedEvent);
> 			((SWF.ComboBox) Provider.Control).SelectedIndexChanged 
> 				-= new EventHandler (OnElementSelectedEvent);
> 		}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/SelectionPatternIsSelectionRequiredEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/SelectionPatternIsSelectionRequiredEvent.cs
>index a925e99..d6de86e 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/SelectionPatternIsSelectionRequiredEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/SelectionPatternIsSelectionRequiredEvent.cs
>@@ -52,16 +52,10 @@ namespace Mono.UIAutomation.Winforms.Events.ComboBox
> 		{
> 			((SWF.ComboBox) Provider.Control).SelectedIndexChanged 
> 				+= new EventHandler (OnSelectedIndexChanged);
>-			if (Provider.Control is SWF.DirComboBox)
>-				((SWF.ComboBox) Provider.Control).SelectedValueChanged 
>-					+= new EventHandler (OnSelectedIndexChanged);
> 		}
> 
> 		public override void Disconnect ()
> 		{
>-			if (Provider.Control is SWF.DirComboBox)
>-				((SWF.ComboBox) Provider.Control).SelectedValueChanged 
>-					-= new EventHandler (OnSelectedIndexChanged);
> 			((SWF.ComboBox) Provider.Control).SelectedIndexChanged 
> 				-= new EventHandler (OnSelectedIndexChanged);
> 		}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/SelectionPatternSelectionEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/SelectionPatternSelectionEvent.cs
>index e3e34c8..254232e 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/SelectionPatternSelectionEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ComboBox/SelectionPatternSelectionEvent.cs
>@@ -53,16 +53,10 @@ namespace Mono.UIAutomation.Winforms.Events.ComboBox
> 		{
> 			((SWF.ComboBox) Provider.Control).SelectedIndexChanged 
> 				+= new EventHandler (OnSelectedIndexChanged);
>-			if (Provider.Control is SWF.DirComboBox)
>-				((SWF.ComboBox) Provider.Control).SelectedValueChanged 
>-					+= new EventHandler (OnSelectedIndexChanged);
> 		}
> 
> 		public override void Disconnect ()
> 		{
>-			if (Provider.Control is SWF.DirComboBox)
>-				((SWF.ComboBox) Provider.Control).SelectedValueChanged 
>-					-= new EventHandler (OnSelectedIndexChanged);
> 			((SWF.ComboBox) Provider.Control).SelectedIndexChanged 
> 				-= new EventHandler (OnSelectedIndexChanged);
> 		}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListBox/ListItemSelectionItemPatternElementSelectedEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListBox/ListItemSelectionItemPatternElementSelectedEvent.cs
>index 420aa1e..a238b31 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListBox/ListItemSelectionItemPatternElementSelectedEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListBox/ListItemSelectionItemPatternElementSelectedEvent.cs
>@@ -68,9 +68,11 @@ namespace Mono.UIAutomation.Winforms.Events.ListBox
> 		{
> 			ListItemProvider provider = (ListItemProvider) Provider;
> 			
>-			if (((SWF.ListBox) provider.Control).SelectedIndex == provider.Index
>-			    && provider.ListProvider.SelectedItemsCount == 1)
>-				RaiseAutomationEvent ();
>+			((SWF.ListBox) provider.Control).InvokeSync (c => {
>+				if (c.SelectedIndex == provider.Index
>+				    && provider.ListProvider.SelectedItemsCount == 1)
>+					RaiseAutomationEvent ();
>+			});
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/HeaderItemAutomationBoundingRectanglePropertyEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/HeaderItemAutomationBoundingRectanglePropertyEvent.cs
>index 67bf622..038923d 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/HeaderItemAutomationBoundingRectanglePropertyEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/HeaderItemAutomationBoundingRectanglePropertyEvent.cs
>@@ -60,9 +60,11 @@ namespace Mono.UIAutomation.Winforms.Events.ListView
> 
> 		private void OnColumnWidthChanged (object sender, ColumnWidthChangedEventArgs args)
> 		{
>-			if (args.ColumnIndex
>-			    == itemProvider.HeaderProvider.ListView.Columns.IndexOf (itemProvider.ColumnHeader))
>-			    RaiseAutomationPropertyChangedEvent ();
>+			itemProvider.HeaderProvider.ListView.InvokeSync (delegate {
>+				if (args.ColumnIndex
>+				    == itemProvider.HeaderProvider.ListView.Columns.IndexOf (itemProvider.ColumnHeader))
>+				    RaiseAutomationPropertyChangedEvent ();
>+			});
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/HeaderItemAutomationIsOffScreenPropertyEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/HeaderItemAutomationIsOffScreenPropertyEvent.cs
>index 06e4c40..c4dab95 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/HeaderItemAutomationIsOffScreenPropertyEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/HeaderItemAutomationIsOffScreenPropertyEvent.cs
>@@ -60,9 +60,11 @@ namespace Mono.UIAutomation.Winforms.Events.ListView
> 
> 		private void OnColumnWidthChanged (object sender, ColumnWidthChangedEventArgs args)
> 		{
>-			if (args.ColumnIndex
>-			    == itemProvider.HeaderProvider.ListView.Columns.IndexOf (itemProvider.ColumnHeader))
>-			    RaiseAutomationPropertyChangedEvent ();
>+			itemProvider.HeaderProvider.ListView.InvokeSync (delegate {
>+				if (args.ColumnIndex
>+				    == itemProvider.HeaderProvider.ListView.Columns.IndexOf (itemProvider.ColumnHeader))
>+				    RaiseAutomationPropertyChangedEvent ();
>+			});
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemEditValuePatternValueEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemEditValuePatternValueEvent.cs
>index da235a4..13f2235 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemEditValuePatternValueEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemEditValuePatternValueEvent.cs
>@@ -61,19 +61,23 @@ namespace Mono.UIAutomation.Winforms.Events.ListView
> 
> 		private void OnUIATextChanged (object sender, SWF.LabelEditEventArgs args)
> 		{
>-			if (args.Item == editProvider.ItemProvider.ListView.Columns.IndexOf (editProvider.ColumnHeader)) {
>-				newText = (string) editProvider.GetPropertyValue (ValuePatternIdentifiers.ValueProperty.Id);
>-				RaiseAutomationPropertyChangedEvent ();
>-			}
>+			editProvider.ItemProvider.ListView.InvokeSync (delegate {
>+				if (args.Item == editProvider.ItemProvider.ListView.Columns.IndexOf (editProvider.ColumnHeader)) {
>+					newText = (string) editProvider.GetPropertyValue (ValuePatternIdentifiers.ValueProperty.Id);
>+					RaiseAutomationPropertyChangedEvent ();
>+				}
>+			});
> 		}
> 
> 		private void OnAfterLabelEdit (object sender, SWF.LabelEditEventArgs args)
> 		{
>-			if (editProvider.ItemProvider.ListView.Items.IndexOf (editProvider.ItemProvider.ListViewItem) 
>-			    == args.Item) {
>-				newText = args.Label;
>-				RaiseAutomationPropertyChangedEvent ();
>-			}
>+			editProvider.ItemProvider.ListView.InvokeSync (delegate {
>+				if (editProvider.ItemProvider.ListView.Items.IndexOf (editProvider.ItemProvider.ListViewItem) 
>+				    == args.Item) {
>+					newText = args.Label;
>+					RaiseAutomationPropertyChangedEvent ();
>+				}
>+			});
> 		}
> 
> 		//We are doing this because AfterLabelEdit event is generated before commiting the text
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternElementAddedEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternElementAddedEvent.cs
>index bcb20b4..acbbf42 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternElementAddedEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternElementAddedEvent.cs
>@@ -66,13 +66,15 @@ namespace Mono.UIAutomation.Winforms.Events.ListView
> 		{
> 			ListItemProvider provider = (ListItemProvider) Provider;
> 			SWF.ListView listView = (SWF.ListView) sender;
>-			
>-			if (selected == false
>-			    && listView.SelectedIndices.Count > 1
>-			    && listView.SelectedIndices.Contains (provider.Index) == true)
>-				RaiseAutomationEvent ();
>-			
>-			selected = listView.SelectedIndices.Contains (provider.Index);
>+
>+			listView.InvokeSync (delegate {
>+				if (selected == false
>+				    && listView.SelectedIndices.Count > 1
>+				    && listView.SelectedIndices.Contains (provider.Index) == true)
>+					RaiseAutomationEvent ();
>+				
>+				selected = listView.SelectedIndices.Contains (provider.Index);
>+			});
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternElementRemovedEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternElementRemovedEvent.cs
>index b8c96f1..b5c09a5 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternElementRemovedEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternElementRemovedEvent.cs
>@@ -68,13 +68,15 @@ namespace Mono.UIAutomation.Winforms.Events.ListView
> 		{
> 			ListItemProvider provider = (ListItemProvider) Provider;
> 			SWF.ListView listView = (SWF.ListView) sender;
>-			
>-			if (selected == true
>-			    && listView.SelectedIndices.Count > 1
>-			    && listView.SelectedIndices.Contains (provider.Index) == false)
>-				RaiseAutomationEvent ();
>-			
>-			selected = listView.SelectedIndices.Contains (provider.Index);
>+
>+			listView.InvokeSync (delegate {
>+				if (selected == true
>+				    && listView.SelectedIndices.Count > 1
>+				    && listView.SelectedIndices.Contains (provider.Index) == false)
>+					RaiseAutomationEvent ();
>+				
>+				selected = listView.SelectedIndices.Contains (provider.Index);
>+			});
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternElementSelectedEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternElementSelectedEvent.cs
>index e36f7bf..69ac766 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternElementSelectedEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternElementSelectedEvent.cs
>@@ -65,10 +65,12 @@ namespace Mono.UIAutomation.Winforms.Events.ListView
> 		{
> 			ListItemProvider provider = (ListItemProvider) Provider;
> 			SWF.ListView listView = (SWF.ListView) sender;
>-			
>-			if (listView.SelectedIndices.Count == 1
>-			    && listView.SelectedIndices.Contains (provider.Index) == true)
>-				RaiseAutomationEvent ();
>+
>+			listView.InvokeSync (delegate {
>+				if (listView.SelectedIndices.Count == 1
>+				    && listView.SelectedIndices.Contains (provider.Index) == true)
>+					RaiseAutomationEvent ();
>+			});
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternIsSelectedEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternIsSelectedEvent.cs
>index 9d9cf75..99c0164 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternIsSelectedEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/ListView/ListItemSelectionItemPatternIsSelectedEvent.cs
>@@ -67,13 +67,15 @@ namespace Mono.UIAutomation.Winforms.Events.ListView
> 		{
> 			SWF.ListView listView = (SWF.ListView) sender;
> 			ListItemProvider provider = (ListItemProvider) Provider;
>-			
>-			bool selectedChanged = listView.SelectedIndices.Contains (provider.Index);
>-			
>-			if (selectedChanged != selected) {
>-			    RaiseAutomationPropertyChangedEvent ();
>-				selected = selectedChanged;
>-			}
>+
>+			listView.InvokeSync (delegate {
>+				bool selectedChanged = listView.SelectedIndices.Contains (provider.Index);
>+				
>+				if (selectedChanged != selected) {
>+				    RaiseAutomationPropertyChangedEvent ();
>+					selected = selectedChanged;
>+				}
>+			});
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/RadioButton/SelectionItemPatternElementSelectedEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/RadioButton/SelectionItemPatternElementSelectedEvent.cs
>index 094854f..5378fad 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/RadioButton/SelectionItemPatternElementSelectedEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/RadioButton/SelectionItemPatternElementSelectedEvent.cs
>@@ -59,7 +59,7 @@ namespace Mono.UIAutomation.Winforms.Events.RadioButton
> 		
> 		private void OnElementSelectedEvent (object sender, System.EventArgs e)
> 		{
>-			if (((SWF.RadioButton) Provider.Control).Checked)
>+			if (((SWF.RadioButton) Provider.Control).InvokeSync (c => c.Checked))
> 				RaiseAutomationEvent ();
> 		}
> 		
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/TextBox/TextPatternCaretMovedEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/TextBox/TextPatternCaretMovedEvent.cs
>index e9a211f..4a91a64 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/TextBox/TextPatternCaretMovedEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/TextBox/TextPatternCaretMovedEvent.cs
>@@ -63,7 +63,7 @@ namespace Mono.UIAutomation.Winforms.Events.TextBox
> 				if (Provider.Control is SWF.TextBoxBase)
> 					return (SWF.TextBoxBase)Provider.Control;
> 				else if (Provider.Control is SWF.UpDownBase)
>-					return ((SWF.UpDownBase)Provider.Control).txtView;
>+					return ((SWF.UpDownBase)Provider.Control).InvokeSync (c => c.txtView);
> 				else
> 					throw new Exception ("TextBoxBase: Unknown type: " + Provider.Control);
> 			}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/TextBox/TextPatternTextSelectionChangedEvent.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/TextBox/TextPatternTextSelectionChangedEvent.cs
>index e2ca264..939470a 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/TextBox/TextPatternTextSelectionChangedEvent.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Events/TextBox/TextPatternTextSelectionChangedEvent.cs
>@@ -73,7 +73,7 @@ namespace Mono.UIAutomation.Winforms.Events.TextBox
> 		private void OnSelectionChangedEvent (object sender, 
> 		                                    EventArgs args)
> 		{
>-			SWF.Document document = TextBoxBase.Document;
>+			SWF.Document document = TextBoxBase.InvokeSync (c => c.Document);
> 			if (!selectionVisible && !document.selection_visible)
> 				return;
> 			if (document.selection_visible != selectionVisible || document.selection_start != selectionStart || document.selection_end != selectionEnd) {
>@@ -89,7 +89,7 @@ namespace Mono.UIAutomation.Winforms.Events.TextBox
> 				if (Provider.Control is SWF.TextBoxBase)
> 					return (SWF.TextBoxBase)Provider.Control;
> 				else if (Provider.Control is SWF.UpDownBase)
>-					return ((SWF.UpDownBase)Provider.Control).txtView;
>+					return ((SWF.UpDownBase)Provider.Control).InvokeSync (c => c.txtView);
> 				else
> 					throw new Exception ("TextBoxBase: Unknown type: " + Provider.Control);
> 			}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Navigation/ParentNavigation.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Navigation/ParentNavigation.cs
>index ab6b1ae..d470276 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Navigation/ParentNavigation.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.Navigation/ParentNavigation.cs
>@@ -160,31 +160,38 @@ namespace Mono.UIAutomation.Winforms.Navigation
> 				} else {
> 					AddElementAt (args.Index, args.ChildProvider.Navigation);
> 				}
>-		
>+
>+				
> 				if (args.RaiseEvent == true) {
>+//					Helper.DelegateQueue.Get ().Enqueue (delegate {
> 					Helper.RaiseStructureChangedEvent (StructureChangeType.ChildAdded, 
> 					                                   args.ChildProvider);
> 					Helper.RaiseStructureChangedEvent (StructureChangeType.ChildrenInvalidated,
> 					                                   (FragmentControlProvider) sender);
>+//					});
> 				}
> 			} else if (args.ChangeType == StructureChangeType.ChildRemoved) {
> 				Remove (args.ChildProvider.Navigation);
> 	
> 				if (args.RaiseEvent == true) {
>+//					Helper.DelegateQueue.Get ().Enqueue (delegate {
> 					Helper.RaiseStructureChangedEvent (StructureChangeType.ChildRemoved, 
> 					                                   args.ChildProvider);
> 					Helper.RaiseStructureChangedEvent (StructureChangeType.ChildrenInvalidated,
> 					                                   (FragmentControlProvider) sender);
>+//					});
> 				}
> 			} else if (args.ChangeType == StructureChangeType.ChildrenReordered) {
> 				chain.Clear ();
> 				
> 				//TODO: Is this the event to generate?
> 				if (args.RaiseEvent == true) {
>+//					Helper.DelegateQueue.Get ().Enqueue (delegate {
> 					Helper.RaiseStructureChangedEvent (StructureChangeType.ChildrenBulkRemoved, 
> 					                                   (FragmentControlProvider) sender);
> 					Helper.RaiseStructureChangedEvent (StructureChangeType.ChildrenInvalidated,
> 					                                   (FragmentControlProvider) sender);
>+//					});
> 				}
> 			}
> 		}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.mdp b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.mdp
>index 3afeaf4..e982d38 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.mdp
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms.mdp
>@@ -1,4 +1,4 @@
>-<Project name="Mono.UIAutomation.Winforms" fileversion="2.0" language="C#" UseParentDirectoryAsNamespace="True" DefaultNamespace="Mono.UIAutomation.Winforms" clr-version="Net_2_0" targetFramework="3.5" ctype="DotNetProject">
>+<Project name="Mono.UIAutomation.Winforms" fileversion="2.0" language="C#" DefaultNamespace="Mono.UIAutomation.Winforms" UseParentDirectoryAsNamespace="True" clr-version="Net_2_0" targetFramework="3.5" ctype="DotNetProject">
>   <Configurations active="Debug">
>     <Configuration name="Debug" ctype="DotNetProjectConfiguration">
>       <Output directory="bin/Debug" signAssembly="True" assemblyKeyFile="../mono-uia.snk" assembly="UIAutomationWinforms" />
>@@ -23,7 +23,6 @@
>     <File name="Mono.UIAutomation.Winforms/RadioButtonProvider.cs" subtype="Code" buildaction="Compile" />
>     <File name="Mono.UIAutomation.Winforms/LabelProvider.cs" subtype="Code" buildaction="Compile" />
>     <File name="Mono.UIAutomation.Winforms/TextBoxProvider.cs" subtype="Code" buildaction="Compile" />
>-    <File name="Mono.UIAutomation.Winforms/Helper.cs" subtype="Code" buildaction="Compile" />
>     <File name="Mono.UIAutomation.Winforms/LinkLabelProvider.cs" subtype="Code" buildaction="Compile" />
>     <File name="Mono.UIAutomation.Winforms.Events/AutomationHasKeyboardFocusPropertyEvent.cs" subtype="Code" buildaction="Compile" />
>     <File name="Mono.UIAutomation.Winforms.Events/AutomationBoundingRectanglePropertyEvent.cs" subtype="Code" buildaction="Compile" />
>@@ -567,6 +566,14 @@
>     <File name="Mono.UIAutomation.Winforms.Events/DataGridView/DataItemChildHasKeyboardFocusPropertyEvent.cs" subtype="Code" buildaction="Compile" />
>     <File name="Mono.UIAutomation.Winforms.Behaviors/DataGrid/DataItemEditSelectionItemProviderBehavior.cs" subtype="Code" buildaction="Compile" />
>     <File name="Mono.UIAutomation.Winforms.Events/DataGrid/DataItemEditSelectionItemPatternIsSelectedEvent.cs" subtype="Code" buildaction="Compile" />
>+    <File name="Mono.UIAutomation.Winforms.Behaviors/ListView/ListItemInvokeProviderBehavior.cs" subtype="Code" buildaction="Compile" />
>+    <File name="Mono.UIAutomation.Winforms.Behaviors/ToolStripButton/ToggleProviderBehavior.cs" subtype="Code" buildaction="Compile" />
>+    <File name="Mono.UIAutomation.Winforms.Events/DateTimePicker/CheckboxAutomationHasKeyboardFocusPropertyEvent.cs" subtype="Code" buildaction="Compile" />
>+    <File name="Mono.UIAutomation.Winforms.Events/DateTimePicker/PartAutomationHasKeyboardFocusPropertyEvent.cs" subtype="Code" buildaction="Compile" />
>+    <File name="Mono.UIAutomation.Winforms.Events/MonthCalendar/AutomationNamePropertyEvent.cs" subtype="Code" buildaction="Compile" />
>+    <File name="Mono.UIAutomation.Winforms.Events/PopupButton/AutomationHasKeyboardFocusPropertyEvent.cs" subtype="Code" buildaction="Compile" />
>+    <File name="Mono.UIAutomation.Winforms.Events/ToolStripButton/TogglePatternToggleStateEvent.cs" subtype="Code" buildaction="Compile" />
>+    <File name="Mono.UIAutomation.Winforms/Helper.cs" subtype="Code" buildaction="Compile" />
>   </Contents>
>   <References>
>     <ProjectReference type="Gac" localcopy="True" refto="System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
>@@ -578,10 +585,10 @@
>     <ProjectReference type="Gac" localcopy="True" refto="System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
>     <ProjectReference type="Gac" localcopy="True" refto="UIAutomationTypes, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
>     <ProjectReference type="Gac" localcopy="True" refto="UIAutomationProvider, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
>+    <ProjectReference type="Gac" localcopy="True" refto="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
>     <ProjectReference type="Gac" localcopy="True" refto="glib-sharp, Version=2.14.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f" />
>     <ProjectReference type="Gac" localcopy="True" refto="atk-sharp, Version=2.14.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f" />
>     <ProjectReference type="Gac" localcopy="True" refto="Mono.WebBrowser, Version=0.5.0.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756" />
>-    <ProjectReference type="Gac" localcopy="True" refto="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
>   </References>
>   <MonoDevelop.Autotools.MakefileInfo IntegrationEnabled="True" RelativeMakefileName="Makefile.am" IsAutotoolsProject="True" RelativeConfigureInPath="..">
>     <BuildFilesVar Sync="True" Name="FILES" />
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/BalloonWindowProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/BalloonWindowProvider.cs
>index 4ed92a5..28b912e 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/BalloonWindowProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/BalloonWindowProvider.cs
>@@ -75,7 +75,7 @@ namespace Mono.UIAutomation.Winforms
> 		protected override object GetProviderPropertyValue (int propertyId)
> 		{
> 			if (propertyId == AutomationElementIdentifiers.HelpTextProperty.Id)
>-				return balloon.AccessibleDescription?? balloon.Title;
>+				return balloon.InvokeSync (c => c.AccessibleDescription ?? c.Title);
> 			else if (propertyId == AutomationElementIdentifiers.IsNotifyIconProperty.Id)
> 				return true;
> 			else
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/CheckedListBoxProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/CheckedListBoxProvider.cs
>index 2746354..202f0fe 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/CheckedListBoxProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/CheckedListBoxProvider.cs
>@@ -52,8 +52,10 @@ namespace Mono.UIAutomation.Winforms
> 		{
> 			if (ContainsItem (item) == true) {
> 				SWF.CheckedListBox checkedListBox = (SWF.CheckedListBox) Control;
>-				bool chcked = checkedListBox.GetItemChecked (item.Index);
>-				checkedListBox.SetItemChecked (item.Index, !chcked);
>+				checkedListBox.InvokeSync (delegate {
>+					bool chcked = checkedListBox.GetItemChecked (item.Index);
>+					checkedListBox.SetItemChecked (item.Index, !chcked);
>+				});
> 			}
> 		}
> 		
>@@ -62,7 +64,8 @@ namespace Mono.UIAutomation.Winforms
> 			if (ContainsItem (item) == true) {
> 				SWF.CheckedListBox checkedListBox = (SWF.CheckedListBox) Control;	
> 				
>-				SWF.CheckState state = checkedListBox.GetItemCheckState (item.Index);
>+				SWF.CheckState state 
>+					= checkedListBox.InvokeSync (c => c.GetItemCheckState (item.Index));
> 				switch (state) {
> 					case SWF.CheckState.Checked:
> 						return ToggleState.On;
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ComboBoxProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ComboBoxProvider.cs
>index 6a57f7c..54c0534 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ComboBoxProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ComboBoxProvider.cs
>@@ -79,7 +79,7 @@ namespace Mono.UIAutomation.Winforms
> 			else if (propertyId == AEIds.LocalizedControlTypeProperty.Id)
> 				return Catalog.GetString ("combo box");
> 			else if (propertyId == AEIds.HasKeyboardFocusProperty.Id
>-				 && comboboxControl.DropDownStyle == SWF.ComboBoxStyle.DropDown)
>+			         && comboboxControl.InvokeSync (b => b.DropDownStyle == SWF.ComboBoxStyle.DropDown))
> 				return false;
> 			else
> 				return base.GetProviderPropertyValue (propertyId);
>@@ -107,8 +107,7 @@ namespace Mono.UIAutomation.Winforms
> 		
> 		public override IRawElementProviderFragment GetFocus ()
> 		{
>-			return listboxProvider.GetItemProviderFrom (listboxProvider, 
>-			                                            comboboxControl.SelectedItem);
>+			return comboboxControl.InvokeSync (c => listboxProvider.GetItemProviderFrom (listboxProvider, c.SelectedItem));
> 		}		
> 		
> 		public override IRawElementProviderFragment ElementProviderFromPoint (double x, double y)
>@@ -159,7 +158,10 @@ namespace Mono.UIAutomation.Winforms
> 		
> 		private void UpdateBehaviors (bool updateAssociatedChildren) 
> 		{
>-			if (comboboxControl.DropDownStyle == SWF.ComboBoxStyle.Simple) {
>+			SWF.ComboBoxStyle style 
>+				= comboboxControl.InvokeSync (c => c.DropDownStyle);
>+			
>+			if (style == SWF.ComboBoxStyle.Simple) {
> 				SetBehavior (ExpandCollapsePatternIdentifiers.Pattern, 
> 				             null);
> 				if (!IsBehaviorEnabled (ValuePatternIdentifiers.Pattern))
>@@ -173,7 +175,7 @@ namespace Mono.UIAutomation.Winforms
> 					TerminateButtonProvider ();
> 					InitializeEditProvider ();
> 				}
>-			} else if (comboboxControl.DropDownStyle == SWF.ComboBoxStyle.DropDown) {
>+			} else if (style == SWF.ComboBoxStyle.DropDown) {
> 				if (!IsBehaviorEnabled (ExpandCollapsePatternIdentifiers.Pattern))
> 					SetBehavior (ExpandCollapsePatternIdentifiers.Pattern,
> 					             new ExpandCollapseProviderBehavior (this));
>@@ -188,7 +190,7 @@ namespace Mono.UIAutomation.Winforms
> 					InitializeButtonProvider ();
> 					InitializeEditProvider ();
> 				}
>-			} else if (comboboxControl.DropDownStyle == SWF.ComboBoxStyle.DropDownList) {
>+			} else if (style == SWF.ComboBoxStyle.DropDownList) {
> 				if (!IsBehaviorEnabled (ExpandCollapsePatternIdentifiers.Pattern))
> 					SetBehavior (ExpandCollapsePatternIdentifiers.Pattern,
> 					             new ExpandCollapseProviderBehavior (this));
>@@ -299,7 +301,8 @@ namespace Mono.UIAutomation.Winforms
> 					else
> 						return Helper.GetControlScreenBounds (listboxControl.Bounds, listboxControl);
> 				} else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id) {
>-					if (comboboxControl.DropDownStyle == SWF.ComboBoxStyle.Simple)
>+					if (comboboxControl.InvokeSync (s => s.DropDownStyle)
>+					    == SWF.ComboBoxStyle.Simple)
> 						return false;
> 					
> 					IExpandCollapseProvider pattern 
>@@ -310,60 +313,74 @@ namespace Mono.UIAutomation.Winforms
> 			}
> 
> 			public override int SelectedItemsCount {
>-				get { return comboboxControl.SelectedIndex == -1 ? 0 : 1; }
>+				get {
>+					return comboboxControl.InvokeSync (c => c.SelectedIndex == -1 ? 0 : 1);
>+				}
> 			}
> 			
> 			public override int ItemsCount {
>-				get { return comboboxControl.Items.Count; }
>+				get {
>+					return comboboxControl.InvokeSync (c => c.Items.Count);
>+				}
> 			}
> 
> 			public override int IndexOfObjectItem (object objectItem)
> 			{
>-				return comboboxControl.Items.IndexOf (objectItem);
>+				return comboboxControl.InvokeSync (c => c.Items.IndexOf (objectItem));
> 			}	
> 
> 			public override IRawElementProviderSimple[] GetSelectedItems ()
> 			{
>-				if (comboboxControl == null || comboboxControl.SelectedIndex == -1)
>+				if (comboboxControl == null)
> 					return new IRawElementProviderSimple [0];
>-				else
>-					return new IRawElementProviderSimple [] { GetItemProviderFrom (this,
>-					                                                               comboboxControl.SelectedItem) };
>+				return comboboxControl.InvokeSync (c => {
>+					if (c.SelectedIndex == -1)
>+						return new IRawElementProviderSimple [0];
>+					else
>+						return new IRawElementProviderSimple [] { GetItemProviderFrom (this,
>+						                                                               c.SelectedItem) };
>+				});
> 			}
> 
> 			public override void SelectItem (ListItemProvider item)
> 			{
> 				if (ContainsItem (item) == true) {
>-					comboboxControl.SelectedIndex = item.Index;
>-
>-					// Raise SelectionChangeCommitted event
>-					// on the ComboBox. Since we are simulating
>-					// a user interacting with the control,
>-					// this event is expected.
>-					//
>-					// NOTE: This is a protected method that
>-					//       is a part of the documented
>-					//       API for SWF.ComboBox.
>-					MethodInfo onSelectionChangeCommitted =
>-						comboboxControl.GetType ().GetMethod ("OnSelectionChangeCommitted",
>-						                                      BindingFlags.NonPublic | BindingFlags.Instance);
>-					if (onSelectionChangeCommitted != null) {
>-						onSelectionChangeCommitted.Invoke (comboboxControl,
>-							                                   new object [] {EventArgs.Empty});
>-					}
>+					comboboxControl.InvokeSync (delegate {
>+						comboboxControl.SelectedIndex = item.Index;
>+						// Raise SelectionChangeCommitted event
>+						// on the ComboBox. Since we are simulating
>+						// a user interacting with the control,
>+						// this event is expected.
>+						//
>+						// NOTE: This is a protected method that
>+						//       is a part of the documented
>+						//       API for SWF.ComboBox.
>+						MethodInfo onSelectionChangeCommitted =
>+							comboboxControl.GetType ().GetMethod ("OnSelectionChangeCommitted",
>+							                                      BindingFlags.NonPublic | BindingFlags.Instance);
>+						if (onSelectionChangeCommitted != null) {
>+							onSelectionChangeCommitted.Invoke (comboboxControl,
>+								                                   new object [] {EventArgs.Empty});
>+						}
>+					});
> 				}
> 			}
> 	
> 			public override void UnselectItem (ListItemProvider item)
> 			{
> 				if (ContainsItem (item) == true)
>-					comboboxControl.SelectedIndex = -1;
>+					comboboxControl.InvokeSync (delegate {
>+						comboboxControl.SelectedIndex = -1;
>+					});
> 			}
> 			
> 			public override bool IsItemSelected (ListItemProvider item)
> 			{
>-				return ContainsItem (item) == false 
>-					? false : item.Index == comboboxControl.SelectedIndex;
>+				if (!ContainsItem (item))
>+					return false;
>+				else
>+					return comboboxControl.InvokeSync (c => {
>+						return item.Index == c.SelectedIndex; });
> 			}
> 
> 			public override void InitializeChildControlStructure ()
>@@ -372,7 +389,8 @@ namespace Mono.UIAutomation.Winforms
> 
> 				comboboxControl.Items.UIACollectionChanged += OnCollectionChanged;
> 
>-				foreach (object objectItem in comboboxControl.Items) {
>+				foreach (object objectItem 
>+				         in comboboxControl.InvokeSync (c => c.Items)) {
> 					ListItemProvider item = GetItemProviderFrom (this, objectItem);
> 					AddChildProvider (item);
> 				}
>@@ -395,8 +413,7 @@ namespace Mono.UIAutomation.Winforms
> 			                                             int propertyId)
> 			{
> 				if (propertyId == AutomationElementIdentifiers.NameProperty.Id)
>-					return comboboxControl.GetItemText (item.ObjectItem);
>-
>+					return comboboxControl.InvokeSync (c => c.GetItemText (item.ObjectItem));
> 				int topItem = -1;
> 				if (ListBoxControl != null)
> 					topItem = ListBoxControl.UIATopItem;
>@@ -404,7 +421,7 @@ namespace Mono.UIAutomation.Winforms
> 				if (ContainsItem (item) == false)
> 					return null;
> 				else if (propertyId == AutomationElementIdentifiers.HasKeyboardFocusProperty.Id)
>-					return comboboxControl.Focused && item.Index == comboboxControl.SelectedIndex;
>+					return comboboxControl.InvokeSync (b => b.Focused && item.Index == b.SelectedIndex);
> 				else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id) {
> 					//FIXME: We need to improve this
> 					int index = item.Index;
>@@ -412,12 +429,12 @@ namespace Mono.UIAutomation.Winforms
> 					System.Drawing.Rectangle bounds = System.Drawing.Rectangle.Empty;
> 
> 					if (ListBoxControl == null)
>-						bounds = comboboxControl.Bounds;
>+						bounds = comboboxControl.InvokeSync (c => c.Bounds);
> 					else
>-						bounds = ListBoxControl.Bounds;
>+						bounds = ListBoxControl.InvokeSync (c => c.Bounds);
> 
>-					int itemHeight = comboboxControl.GetItemHeight (0);// TODO: always true?
>-					rectangle.Height = comboboxControl.GetItemHeight (index);
>+					int itemHeight = comboboxControl.InvokeSync (c => c.GetItemHeight (0));// TODO: always true?
>+					rectangle.Height = comboboxControl.InvokeSync (c => c.GetItemHeight (index));
> 					rectangle.Width = bounds.Width;
> 					rectangle.X = bounds.X;
> 					rectangle.Y = bounds.Y + (index * itemHeight) - (topItem * itemHeight);// decreaseY;
>@@ -427,18 +444,20 @@ namespace Mono.UIAutomation.Winforms
> 					else
> 						return Helper.GetControlScreenBounds (rectangle, ListBoxControl);
> 				} else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id) {
>-					if (comboboxControl.SelectedIndex == item.Index)
>-						return false;
>-					
>-					if (topItem == -1 || !ListBoxControl.Visible)
>-						return !(comboboxControl.SelectedIndex == item.Index);
>-
>-					int lastItem = ListBoxControl.UIALastItem;				
>-					if ((item.Index >= topItem && item.Index < lastItem) 
>-					    || (item.Index == lastItem && comboboxControl.Items.Count == lastItem + 1))
>-						return false;
>-					else
>+					return comboboxControl.InvokeSync (c => {
>+						if (c.SelectedIndex == item.Index)
>+							return false;
>+						
>+						if (topItem == -1 || !ListBoxControl.Visible)
>+							return !(c.SelectedIndex == item.Index);
>+	
>+						int lastItem = ListBoxControl.UIALastItem;				
>+						if ((item.Index >= topItem && item.Index < lastItem) 
>+						    || (item.Index == lastItem && c.Items.Count == lastItem + 1))
>+							return false;
>+						else
> 						return true;
>+					});
> 				} else
> 					return null;
> 			}
>@@ -594,7 +613,7 @@ namespace Mono.UIAutomation.Winforms
> 					// This control cannot be selected, but
> 					// it can still be keyboard focused, so
> 					// we override it manually.
>-					return Control.CanFocus;
>+					return Control.InvokeSync (c => c.CanFocus);
> 				}
> 
> 				return base.GetProviderPropertyValue (propertyId);
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ContextMenuProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ContextMenuProvider.cs
>index 9ec3ab7..ec03575 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ContextMenuProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ContextMenuProvider.cs
>@@ -70,18 +70,23 @@ namespace Mono.UIAutomation.Winforms
> 		{
> 			base.Initialize ();
> 
>+//			System.Threading.ThreadPool.QueueUserWorkItem (v => {
>+
> 			AutomationEventArgs args = new AutomationEventArgs (AEIds.MenuOpenedEvent);
> 			AutomationInteropProvider.RaiseAutomationEvent (AEIds.MenuOpenedEvent,
> 			                                                this,
> 			                                                args);
>+//			});
> 		}
> 
> 		public override void Terminate ()
> 		{
>+//			System.Threading.ThreadPool.QueueUserWorkItem (v => {
> 			AutomationEventArgs args = new AutomationEventArgs (AEIds.MenuClosedEvent);
> 			AutomationInteropProvider.RaiseAutomationEvent (AEIds.MenuClosedEvent,
> 			                                                this,
> 			                                                args);
>+//			});
> 			base.Terminate ();
> 		}
> 		
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ContextMenuStripProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ContextMenuStripProvider.cs
>index fba1fa5..265ac32 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ContextMenuStripProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ContextMenuStripProvider.cs
>@@ -47,19 +47,23 @@ namespace Mono.UIAutomation.Winforms
> 		public override void Initialize ()
> 		{
> 			base.Initialize ();
>+//			System.Threading.ThreadPool.QueueUserWorkItem (v => {
> 
> 			AutomationEventArgs args = new AutomationEventArgs (AEIds.MenuOpenedEvent);
> 			AutomationInteropProvider.RaiseAutomationEvent (AEIds.MenuOpenedEvent,
> 			                                                this,
> 			                                                args);
>+//			});
> 		}
> 
> 		public override void Terminate ()
> 		{
>+//			System.Threading.ThreadPool.QueueUserWorkItem (v => {
> 			AutomationEventArgs args = new AutomationEventArgs (AEIds.MenuClosedEvent);
> 			AutomationInteropProvider.RaiseAutomationEvent (AEIds.MenuClosedEvent,
> 			                                                this,
> 			                                                args);
>+//			});
> 			base.Terminate ();
> 		}
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DataGridProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DataGridProvider.cs
>index 06dd481..4f28076 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DataGridProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DataGridProvider.cs
>@@ -57,7 +57,10 @@ namespace Mono.UIAutomation.Winforms
> 		#region Public Properties
> 
> 		public SWF.DataGridTableStyle CurrentTableStyle {
>-			get { return datagrid.UIACurrentTableStyle; }
>+			get { 
>+				return Helper.SynchronizedGet<SWF.DataGrid, SWF.DataGridTableStyle> (datagrid,
>+				                                                                     v => datagrid.UIACurrentTableStyle);
>+			}
> 		}
> 
> 		public SWF.CurrencyManager CurrencyManager {
>@@ -137,11 +140,13 @@ namespace Mono.UIAutomation.Winforms
> 			             new SelectionProviderBehavior (this));
> 			SetBehavior (GridPatternIdentifiers.Pattern,
> 			             new GridProviderBehavior (this));
>-			
>-			// Table Pattern is *only* supported when Header exists
>-			if (datagrid.CurrentTableStyle.GridColumnStyles.Count > 0
>-			    && datagrid.ColumnHeadersVisible)
>-				CreateHeader (datagrid.CurrentTableStyle);
>+
>+			Helper.SynchronizedSet (datagrid, delegate {
>+				// Table Pattern is *only* supported when Header exists
>+				if (datagrid.CurrentTableStyle.GridColumnStyles.Count > 0
>+				    && datagrid.ColumnHeadersVisible)
>+					CreateHeader (datagrid.CurrentTableStyle);
>+			});
> 		}
> 
> 		public override void Terminate ()
>@@ -213,8 +218,10 @@ namespace Mono.UIAutomation.Winforms
> 		public void FocusItem (object objectItem)
> 		{
> 			int row = (int) objectItem;
>-			datagrid.Focus ();
>-			datagrid.CurrentCell = new SWF.DataGridCell (row, 0);
>+			Helper.SynchronizedSet (datagrid, delegate {
>+				datagrid.Focus ();
>+				datagrid.CurrentCell = new SWF.DataGridCell (row, 0);
>+			});
> 		}
> 
> 		public int SelectedItemsCount {
>@@ -231,30 +238,32 @@ namespace Mono.UIAutomation.Winforms
> 			if (!items.Contains (item))
> 				return false;
> 			
>-			return datagrid.IsSelected (item.Index);
>+			return Helper.SynchronizedGet<SWF.DataGrid, bool> (datagrid, v => datagrid.IsSelected (item.Index));
> 		}
> 
> 		public void SelectItem (ListItemProvider item)
> 		{
> 			if (items.Contains (item))
>-				datagrid.Select (item.Index);
>+				Helper.SynchronizedSet (datagrid, delegate { datagrid.Select (item.Index); });
> 		}
> 
> 		public void UnselectItem (ListItemProvider item)
> 		{
> 			if (items.Contains (item))
>-				datagrid.UnSelect (item.Index);
>+				Helper.SynchronizedSet (datagrid, delegate { datagrid.UnSelect (item.Index); });
> 		}
> 
> 		public object GetItemPropertyValue (ListItemProvider item,
> 		                                    int propertyId)
> 		{
> 			if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id) {
>-				int index = item.Index;
>-				// We need to union last column and first column
>-				SD.Rectangle rect0 = datagrid.GetCellBounds (index, 0);
>-				SD.Rectangle rectN = datagrid.GetCellBounds (index, header.ChildrenCount);
>-				return Helper.GetControlScreenBounds (SD.Rectangle.Union (rect0, rectN), datagrid);
>+				return Helper.SynchronizedGet<SWF.DataGrid, Rect> (datagrid, delegate {
>+					int index = item.Index;
>+					// We need to union last column and first column
>+					SD.Rectangle rect0 = datagrid.GetCellBounds (index, 0);
>+					SD.Rectangle rectN = datagrid.GetCellBounds (index, header.ChildrenCount);
>+					return Helper.GetControlScreenBounds (SD.Rectangle.Union (rect0, rectN), datagrid);
>+				});
> 			} else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id) {
> 				Rect bounds 
> 					= (Rect) GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id);
>@@ -264,9 +273,11 @@ namespace Mono.UIAutomation.Winforms
> 			else if (propertyId == AutomationElementIdentifiers.IsKeyboardFocusableProperty.Id)
> 				return true;
> 			else if (propertyId == AutomationElementIdentifiers.HasKeyboardFocusProperty.Id) {
>-				SWF.DataGridCell currentCell = datagrid.CurrentCell;
>-				return currentCell.ColumnNumber == 0 && currentCell.RowNumber == item.Index
>-					&& datagrid.Focused;
>+				return Helper.SynchronizedGet<SWF.DataGrid, bool> (datagrid, delegate {
>+					SWF.DataGridCell currentCell = datagrid.CurrentCell;
>+					return currentCell.ColumnNumber == 0 && currentCell.RowNumber == item.Index
>+						&& datagrid.Focused;
>+				});
> 			} else
> 				return null;
> 		}
>@@ -275,7 +286,8 @@ namespace Mono.UIAutomation.Winforms
> 		{
> 			if (items.Contains (item)) {
> 				try {
>-					if ((bool) datagrid [item.Index, 0])
>+					if (Helper.SynchronizedGet<SWF.DataGrid, bool> (datagrid, 
>+					                                                v => (bool) datagrid [item.Index, 0]))
> 						return ToggleState.On;
> 					else
> 						return ToggleState.Off;
>@@ -380,21 +392,23 @@ namespace Mono.UIAutomation.Winforms
> 					return;
> 			}
> 
>-			// Is showing "+" to expand, this usually happens when DataSource is
>-			// DataSet and has more than one DataTable.
>-			if (datagrid.CurrentTableStyle.GridColumnStyles.Count == 0) {
>-				DataGridCustomProvider customProvider 
>-					= new DataGridCustomProvider (this, 0, string.Empty);
>-				customProvider.Initialize ();
>-				AddChildProvider (customProvider);
>-			} else {
>-				CreateHeader (datagrid.CurrentTableStyle);
>-
>-				for (int row = 0; row < lastCurrencyManager.Count; row++)
>-					CreateListItem (row, datagrid.CurrentTableStyle);
>-			}
>+			Helper.SynchronizedSet (datagrid, delegate {
>+				// Is showing "+" to expand, this usually happens when DataSource is
>+				// DataSet and has more than one DataTable.
>+				if (datagrid.CurrentTableStyle.GridColumnStyles.Count == 0) {
>+					DataGridCustomProvider customProvider 
>+						= new DataGridCustomProvider (this, 0, string.Empty);
>+					customProvider.Initialize ();
>+					AddChildProvider (customProvider);
>+				} else {
>+					CreateHeader (datagrid.CurrentTableStyle);
>+	
>+					for (int row = 0; row < lastCurrencyManager.Count; row++)
>+						CreateListItem (row, datagrid.CurrentTableStyle);
>+				}
> 
> 			lastDataSource = datagrid.DataSource;
>+			});
> 		}
> 		
> 		private void OnDataSourceChanged (object sender, EventArgs args)
>@@ -403,7 +417,9 @@ namespace Mono.UIAutomation.Winforms
> 			SWF.CurrencyManager manager = null;
> 
> 			// Happens when Navigating DataGrid
>-			if (lastDataSource == datagrid.DataSource) {
>+			if (lastDataSource 
>+			    == Helper.SynchronizedGet<SWF.DataGrid, object> (datagrid, 
>+			                                                     v => datagrid.DataSource)) {
> 				manager = RequestCurrencyManager ();
> 				// Only when rendering something different we refresh children
> 				if (manager != null && manager != lastCurrencyManager)
>@@ -421,16 +437,20 @@ namespace Mono.UIAutomation.Winforms
> 
> 		private SWF.CurrencyManager RequestCurrencyManager () 
> 		{
>-			if (datagrid.DataSource == null)
>-			    return null;
>-			
>-			return (SWF.CurrencyManager) datagrid.BindingContext [datagrid.DataSource,
>-			                                                      datagrid.DataMember];
>+			return Helper.SynchronizedGet<SWF.DataGrid, SWF.CurrencyManager> (datagrid, delegate {
>+				if (datagrid.DataSource == null)
>+				    return null;
>+				
>+				return (SWF.CurrencyManager) datagrid.BindingContext [datagrid.DataSource,
>+				                                                      datagrid.DataMember];
>+			});
> 		}
> 
> 		private void CreateHeader (SWF.DataGridTableStyle tableStyle)
> 		{
>-			if (!datagrid.ColumnHeadersVisible || header != null)
>+			if (Helper.SynchronizedGet<SWF.DataGrid, bool> (datagrid, 
>+			                                                v => !datagrid.ColumnHeadersVisible)
>+			    || header != null)
> 				return;
> 	
> 			header = new DataGridHeaderProvider (this, tableStyle.GridColumnStyles);
>@@ -513,11 +533,13 @@ namespace Mono.UIAutomation.Winforms
> 				else if (propertyId == AutomationElementIdentifiers.IsEnabledProperty.Id)
> 					return true;
> 				else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id) {
>-					SD.Rectangle rectangle = provider.DataGrid.UIAColumnHeadersArea;
>-					rectangle.X += provider.DataGrid.Bounds.X;
>-					rectangle.Y += provider.DataGrid.Bounds.Y;
>-
>-					return Helper.GetControlScreenBounds (rectangle, provider.DataGrid);
>+					return Helper.SynchronizedGet<SWF.DataGrid, Rect> (provider.DataGrid, delegate {
>+						SD.Rectangle rectangle = provider.DataGrid.UIAColumnHeadersArea;
>+						rectangle.X += provider.DataGrid.Bounds.X;
>+						rectangle.Y += provider.DataGrid.Bounds.Y;
>+	
>+						return Helper.GetControlScreenBounds (rectangle, provider.DataGrid);
>+					});
> 				} else if (propertyId == AutomationElementIdentifiers.ClickablePointProperty.Id)
> 					return Helper.GetClickablePoint (this);
> 				else
>@@ -720,8 +742,11 @@ namespace Mono.UIAutomation.Winforms
> 			}
> 
> 			public object Value {
>-				get { return provider.DataGrid [Index, 0]; }
>-				set { provider.DataGrid [Index, 0] = value; }
>+				get { 
>+					return Helper.SynchronizedGet<SWF.DataGrid, object> (provider.DataGrid,
>+					                                                     o => provider.DataGrid [Index, 0]); 
>+				}
>+				set { Helper.SynchronizedSet (provider.DataGrid, delegate { provider.DataGrid [Index, 0] = value; }); }
> 			}
> 
> 			public void SetEditValue (DataGridDataItemEditProvider edit, object value)
>@@ -731,7 +756,7 @@ namespace Mono.UIAutomation.Winforms
> 				if (column == -1 || row == -1)
> 					return;
> 
>-				provider.DataGrid [row, column] = value;
>+				Helper.SynchronizedSet (provider.DataGrid, delegate { provider.DataGrid [row, column] = value; });
> 			}
> 
> 			public override void InitializeChildControlStructure ()
>@@ -763,8 +788,10 @@ namespace Mono.UIAutomation.Winforms
> 
> 			public override void SetFocus ()
> 			{
>-				DataGridProvider.DataGrid.Focus ();
>-				DataGridProvider.DataGrid.CurrentCell = new SWF.DataGridCell (Index, 0);
>+				Helper.SynchronizedSet (DataGridProvider.DataGrid, delegate {
>+					DataGridProvider.DataGrid.Focus ();
>+					DataGridProvider.DataGrid.CurrentCell = new SWF.DataGridCell (Index, 0);
>+				});
> 			}
> 
> 			protected override object GetProviderPropertyValue (int propertyId)
>@@ -778,12 +805,14 @@ namespace Mono.UIAutomation.Winforms
> 					return ControlType.DataItem.Id;
> 				else if (propertyId == AutomationElementIdentifiers.LocalizedControlTypeProperty.Id)
> 					return Catalog.GetString ("data item");
>-				else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id) 
>-					return Helper.GetControlScreenBounds (DataGridProvider.DataGrid.GetCellBounds (Index, 0),
>-					                                      DataGridProvider.DataGrid);
>+				else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id)
>+					return Helper.SynchronizedGet<SWF.DataGrid, Rect> (DataGridProvider.DataGrid, 
>+					                                                   v => Helper.GetControlScreenBounds (DataGridProvider.DataGrid.GetCellBounds (Index, 0),
>+					                                                                                       DataGridProvider.DataGrid));
> 				else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id) {
>-					return IsOffScreen (DataGridProvider.DataGrid,
>-					                    (Rect) GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id));
>+					return Helper.SynchronizedGet<SWF.DataGrid, bool> (DataGridProvider.DataGrid,
>+					                                                   v => IsOffScreen (DataGridProvider.DataGrid,
>+					                                                                     (Rect) GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id)));;
> 				} else if (propertyId == AutomationElementIdentifiers.ClickablePointProperty.Id)
> 					return Helper.GetClickablePoint (this);
> 				else
>@@ -792,24 +821,27 @@ namespace Mono.UIAutomation.Winforms
> 
> 			public bool IsOffScreen (SWF.DataGrid datagrid, Rect bounds)
> 			{
>-				SD.Rectangle rectangle = datagrid.Bounds;
>-				rectangle.Height -= datagrid.UIACellsArea.Y - rectangle.Y - datagrid.UIARowHeight;
>-				rectangle.Y = datagrid.UIACellsArea.Y;
>-				if (datagrid.ColumnHeadersVisible) {
>-					rectangle.X += datagrid.RowHeaderWidth;
>-					rectangle.Y += datagrid.UIAColumnHeadersArea.Height;
>-					rectangle.Height -= datagrid.UIACaptionArea.Height;
>-				}
>-				if (datagrid.CaptionVisible)
>-					rectangle.X += datagrid.UIACaptionArea.Height;
>-
>-				if (rectangle.Width < 0)
>-					rectangle.Width = 0;
>-				if (rectangle.Height < 0)
>-					rectangle.Height = 0;
>-
>-				Rect screen = Helper.RectangleToRect (datagrid.Parent.RectangleToScreen (rectangle));
>-				return !bounds.IntersectsWith (screen);
>+				return Helper.SynchronizedGet<SWF.DataGrid, bool> (datagrid, delegate {
>+					SD.Rectangle rectangle = datagrid.Bounds;
>+					rectangle.Height -= datagrid.UIACellsArea.Y - rectangle.Y - datagrid.UIARowHeight;
>+					rectangle.Y = datagrid.UIACellsArea.Y;
>+					if (datagrid.ColumnHeadersVisible) {
>+						rectangle.X += datagrid.RowHeaderWidth;
>+						rectangle.Y += datagrid.UIAColumnHeadersArea.Height;
>+						rectangle.Height -= datagrid.UIACaptionArea.Height;
>+					}
>+					if (datagrid.CaptionVisible)
>+						rectangle.X += datagrid.UIACaptionArea.Height;
>+	
>+					if (rectangle.Width < 0)
>+						rectangle.Width = 0;
>+					if (rectangle.Height < 0)
>+						rectangle.Height = 0;
>+	
>+					Rect screen = Helper.RectangleToRect (datagrid.Parent.RectangleToScreen (rectangle));
>+						
>+					return !bounds.IntersectsWith (screen);
>+				});
> 			}
> 
> 			private void OnColumnsCollectionChanged (object sender, CollectionChangeEventArgs args)
>@@ -892,9 +924,11 @@ namespace Mono.UIAutomation.Winforms
> 
> 			public override void SetFocus ()
> 			{
>-				ItemProvider.DataGridProvider.DataGrid.Focus ();
>-				ItemProvider.DataGridProvider.DataGrid.CurrentCell = new SWF.DataGridCell (ItemProvider.Index, 
>-				                                                                           ItemProvider.GetColumnIndexOf (this));
>+				Helper.SynchronizedSet (ItemProvider.DataGridProvider.DataGrid, delegate {
>+					ItemProvider.DataGridProvider.DataGrid.Focus ();
>+					ItemProvider.DataGridProvider.DataGrid.CurrentCell = new SWF.DataGridCell (ItemProvider.Index, 
>+					                                                                           ItemProvider.GetColumnIndexOf (this));
>+				});
> 			}
> 
> 			public SWF.Control ContainerControl { 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DataGridViewProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DataGridViewProvider.cs
>index c84d50a..506cad8 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DataGridViewProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DataGridViewProvider.cs
>@@ -108,17 +108,21 @@ namespace Mono.UIAutomation.Winforms
> 				return;
> 
> 			DataGridDataItemProvider dataItem = (DataGridDataItemProvider) item;
>-			datagridview.FirstDisplayedCell = dataItem.Row.Cells [0];
>+			Helper.SynchronizedSet (datagridview, delegate {
>+				datagridview.FirstDisplayedCell = dataItem.Row.Cells [0];
>+			});
> 		}
> 
> 		public override IRawElementProviderSimple[] GetSelectedItems ()
> 		{
> 			List<DataGridViewDataItemChildProvider> items = new List<DataGridViewDataItemChildProvider> ();
> 			
>-			foreach (SWF.DataGridViewCell cell in datagridview.SelectedCells) {
>+			foreach (SWF.DataGridViewCell cell 
>+			         in Helper.SynchronizedGet<SWF.DataGridView, SWF.DataGridViewSelectedCellCollection> (datagridview, v => datagridview.SelectedCells)) {
> 				DataGridDataItemProvider itemProvider
> 					= (DataGridDataItemProvider) GetItemProviderFrom (this,
>-					                                                  datagridview.Rows [cell.RowIndex],
>+					                                                  Helper.SynchronizedGet<SWF.DataGridView, SWF.DataGridViewRow> (datagridview, 
>+					                                                                                                                 v => datagridview.Rows [cell.RowIndex]),
> 					                                                  false);
> 				if (itemProvider == null) //Not yet initialized
> 					break;
>@@ -129,7 +133,7 @@ namespace Mono.UIAutomation.Winforms
> 		}
> 		
> 		public override int SelectedItemsCount {
>-			get { return datagridview.SelectedRows.Count; }
>+			get { return Helper.SynchronizedGet<SWF.DataGridView,int> (datagridview, c => datagridview.SelectedRows.Count); }
> 		}
> 
> 		public override bool IsItemSelected (ListItemProvider item)
>@@ -141,7 +145,7 @@ namespace Mono.UIAutomation.Winforms
> 		}
> 		
> 		public override int ItemsCount {
>-			get { return datagridview.Rows.Count; }
>+			get { return Helper.SynchronizedGet<SWF.DataGridView,int> (datagridview, c => datagridview.Rows.Count); }
> 		}
> 
> 		public override int IndexOfObjectItem (object objectItem)
>@@ -150,16 +154,16 @@ namespace Mono.UIAutomation.Winforms
> 			if (row == null)
> 				return -1;
> 
>-			return datagridview.Rows.IndexOf (row);
>+			return Helper.SynchronizedGet<SWF.DataGridView,int> (datagridview, c => datagridview.Rows.IndexOf (row));
> 		}
> 
> 		public override void FocusItem (object objectItem)
> 		{
> 			SWF.DataGridViewRow row = objectItem as SWF.DataGridViewRow;
>-			if (row == null || !datagridview.Rows.Contains (row))
>+			if (row == null || Helper.SynchronizedGet<SWF.DataGridView, bool> (datagridview, c => !datagridview.Rows.Contains (row)))
> 				return;
> 
>-			datagridview.CurrentCell = row.Cells [0];
>+			Helper.SynchronizedSet (datagridview, delegate { datagridview.CurrentCell = row.Cells [0]; });
> 		}
> 
> 		public override object GetItemPropertyValue (ListItemProvider item, int propertyId)
>@@ -169,19 +173,23 @@ namespace Mono.UIAutomation.Winforms
> 			if (propertyId == AutomationElementIdentifiers.NameProperty.Id)
> 				return provider.Row.Cells [0].Value as string;
> 			else if (propertyId == AutomationElementIdentifiers.HasKeyboardFocusProperty.Id)
>-				return datagridview.CurrentCell == provider.Row.Cells [0] && datagridview.Focused;
>+				return Helper.SynchronizedGet<SWF.DataGridView, bool> (datagridview, 
>+				                                                       b => datagridview.CurrentCell == provider.Row.Cells [0] 
>+				                                                       && datagridview.Focused);
> 			else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id) {
>-				SD.Rectangle rectangle = datagridview.GetRowDisplayRectangle (provider.Row.Index, false);
>-				if (datagridview.RowHeadersVisible)
>-					rectangle.X += datagridview.RowHeadersWidth;
>-
>-				return Helper.GetControlScreenBounds (rectangle, 
>-				                                      datagridview,
>-				                                      true);
>+				return Helper.SynchronizedGet<SWF.DataGridView, Rect> (datagridview, delegate {
>+					SD.Rectangle rectangle = datagridview.GetRowDisplayRectangle (provider.Row.Index, false);
>+					if (datagridview.RowHeadersVisible)
>+						rectangle.X += datagridview.RowHeadersWidth;
>+	
>+					return Helper.GetControlScreenBounds (rectangle, 
>+					                                      datagridview,
>+					                                      true);					
>+				});
> 			} else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id)
> 				return Helper.IsListItemOffScreen (item.BoundingRectangle,
> 				                                   datagridview, 
>-				                                   datagridview.ColumnHeadersVisible,
>+				                                   Helper.SynchronizedGet<SWF.DataGridView, bool> (datagridview, b => datagridview.ColumnHeadersVisible),
> 				                                   header.Size,
> 				                                   ScrollBehaviorObserver);
> 			else if (propertyId == AutomationElementIdentifiers.IsKeyboardFocusableProperty.Id)
>@@ -226,7 +234,9 @@ namespace Mono.UIAutomation.Winforms
> 			AddChildProvider (header);
> 
> 			datagridview.Rows.CollectionChanged += OnCollectionChanged;
>-			foreach (SWF.DataGridViewRow row in datagridview.Rows) {
>+			foreach (SWF.DataGridViewRow row 
>+			         in Helper.SynchronizedGet<SWF.DataGridView, SWF.DataGridViewRowCollection> (datagridview, 
>+			                                                                                     r => datagridview.Rows)) {
> 				ListItemProvider itemProvider = GetItemProviderFrom (this, row);
> 				AddChildProvider (itemProvider);
> 			}
>@@ -290,17 +300,19 @@ namespace Mono.UIAutomation.Winforms
> 
> 			public SD.Rectangle Size {
> 				get {
>-					if (!DataGridView.ColumnHeadersVisible)
>-						return new SD.Rectangle (0, 0, 0, 0);
>-					else {
>-						SD.Rectangle bounds = SD.Rectangle.Empty;
>-						bounds.Height = DataGridView.ColumnHeadersHeight;
>-						bounds.Width = DataGridView.RowHeadersWidth;
>-						for (int index = 0; index < DataGridView.Columns.Count; index++)
>-							bounds.Width += DataGridView.Columns [index].Width;
>-						
>-						return bounds;
>-					}
>+					return Helper.SynchronizedGet<SWF.DataGridView, SD.Rectangle> (DataGridView, delegate {
>+						if (!DataGridView.ColumnHeadersVisible)
>+							return new SD.Rectangle (0, 0, 0, 0);
>+						else {
>+							SD.Rectangle bounds = SD.Rectangle.Empty;
>+							bounds.Height = DataGridView.ColumnHeadersHeight;
>+							bounds.Width = DataGridView.RowHeadersWidth;
>+							for (int index = 0; index < DataGridView.Columns.Count; index++)
>+								bounds.Width += DataGridView.Columns [index].Width;
>+							
>+							return bounds;
>+						}
>+					});
> 				}
> 			}
> 
>@@ -347,7 +359,9 @@ namespace Mono.UIAutomation.Winforms
> 			{
> 				DataGridView.Columns.CollectionChanged += OnColumnsCollectionChanged;
> 				
>-				foreach (SWF.DataGridViewColumn column in DataGridView.Columns)
>+				foreach (SWF.DataGridViewColumn column 
>+				         in Helper.SynchronizedGet<SWF.DataGridView, SWF.DataGridViewColumnCollection> (DataGridView, 
>+				                                                                                        c => DataGridView.Columns))
> 					UpdateCollection (column, CollectionChangeAction.Add);
> 			}
> 
>@@ -447,16 +461,18 @@ namespace Mono.UIAutomation.Winforms
> 				else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id) {
> 					if (column == null || column.Index < 0)
> 						return Rect.Empty;
>-
>-					Rect headerBounds
>-						= (Rect) headerProvider.GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id);
>-					for (int index = 0; index < column.Index; index++)
>-						headerBounds.X += headerProvider.DataGridView.Columns [index].Width;
>-
>-					headerBounds.X += headerProvider.DataGridView.RowHeadersWidth;
>-					headerBounds.Width = headerProvider.DataGridView.Columns [column.Index].Width;
> 					
>-					return headerBounds;
>+					return Helper.SynchronizedGet<SWF.DataGridView, Rect> (headerProvider.DataGridView, delegate {
>+						Rect headerBounds
>+							= (Rect) headerProvider.GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id);
>+						for (int index = 0; index < column.Index; index++)
>+							headerBounds.X += headerProvider.DataGridView.Columns [index].Width;
>+	
>+						headerBounds.X += headerProvider.DataGridView.RowHeadersWidth;
>+						headerBounds.Width = headerProvider.DataGridView.Columns [column.Index].Width;
>+						
>+						return headerBounds;
>+					});
> 				} else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id) {
> 					Rect bounds 
> 						= (Rect) GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id);
>@@ -503,19 +519,21 @@ namespace Mono.UIAutomation.Winforms
> 
> 			public override IRawElementProviderFragment GetFocus ()
> 			{
>-				if (DataGridView.CurrentCell == null 
>-				    || DataGridView.CurrentCell.RowIndex != Row.Index)
>-					return null;
>-				else {
>-					if (DataGridView.CurrentCell.ColumnIndex < 0 
>-					    || DataGridView.CurrentCell.ColumnIndex >= DataGridView.Columns.Count)
>+				return Helper.SynchronizedGet<SWF.DataGridView, IRawElementProviderFragment> (DataGridView, delegate {
>+					if (DataGridView.CurrentCell == null 
>+					    || DataGridView.CurrentCell.RowIndex != Row.Index)
> 						return null;
>-
>-					DataGridViewDataItemChildProvider provider = null;
>-					columns.TryGetValue (DataGridView.Columns [DataGridView.CurrentCell.ColumnIndex], 
>-					                     out provider);
>-					return provider;
>+					else {
>+						if (DataGridView.CurrentCell.ColumnIndex < 0 
>+						    || DataGridView.CurrentCell.ColumnIndex >= DataGridView.Columns.Count)
>+							return null;
>+	
>+						DataGridViewDataItemChildProvider provider = null;
>+						columns.TryGetValue (DataGridView.Columns [DataGridView.CurrentCell.ColumnIndex], 
>+						                     out provider);
>+						return provider;
> 				}
>+				});
> 			}
> 
> 			public DataGridViewDataItemChildProvider GetChildItem (SWF.DataGridViewColumn column)
>@@ -641,8 +659,10 @@ namespace Mono.UIAutomation.Winforms
> 
> 			public override void SetFocus ()
> 			{
>-				itemProvider.DataGridView.Focus ();
>-				itemProvider.DataGridView.CurrentCell = cell;
>+				Helper.SynchronizedSet (itemProvider.DataGridView, delegate {
>+					itemProvider.DataGridView.Focus ();
>+					itemProvider.DataGridView.CurrentCell = cell;
>+				});
> 			}
> 
> 			public override void Initialize ()
>@@ -692,9 +712,10 @@ namespace Mono.UIAutomation.Winforms
> 				if (propertyId == AutomationElementIdentifiers.NameProperty.Id)
> 					return cell.Value as string;
> 				else if (propertyId == AutomationElementIdentifiers.IsKeyboardFocusableProperty.Id)
>-					return gridProvider.DataGridView.Enabled;
>+					return Helper.SynchronizedGet<SWF.DataGridView, bool> (gridProvider.DataGridView, e => gridProvider.DataGridView.Enabled);
> 				else if (propertyId == AutomationElementIdentifiers.HasKeyboardFocusProperty.Id)
>-					return gridProvider.DataGridView.CurrentCell == cell && gridProvider.DataGridView.Focused;
>+					return Helper.SynchronizedGet<SWF.DataGridView, bool> (gridProvider.DataGridView, 
>+					                                                       b => gridProvider.DataGridView.CurrentCell == cell && gridProvider.DataGridView.Focused);
> 				else if (propertyId == AutomationElementIdentifiers.IsEnabledProperty.Id)
> 					return !Cell.ReadOnly;
> 				else if (propertyId == AutomationElementIdentifiers.LabeledByProperty.Id)
>@@ -702,14 +723,16 @@ namespace Mono.UIAutomation.Winforms
> 				else if (propertyId == AutomationElementIdentifiers.HelpTextProperty.Id)
> 					return cell.ToolTipText;
> 				else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id) {
>-					Rect itemBounds = itemProvider.BoundingRectangle;
>-
>-					for (int index = 0; index < cell.ColumnIndex; index++)
>-						itemBounds.X += itemProvider.DataGridView.Columns [index].Width;
>-
>-					itemBounds.Width = itemProvider.DataGridView.Columns [cell.ColumnIndex].Width;
>-
>-					return itemBounds;
>+					return Helper.SynchronizedGet<SWF.DataGridView, Rect> (itemProvider.DataGridView, delegate {
>+						Rect itemBounds = itemProvider.BoundingRectangle;
>+	
>+						for (int index = 0; index < cell.ColumnIndex; index++)
>+							itemBounds.X += itemProvider.DataGridView.Columns [index].Width;
>+	
>+						itemBounds.Width = itemProvider.DataGridView.Columns [cell.ColumnIndex].Width;
>+	
>+						return itemBounds;
>+					});
> 				} else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id)
> 					return cell.Displayed;
> 				else if (propertyId == AutomationElementIdentifiers.ClickablePointProperty.Id)
>@@ -1148,11 +1171,13 @@ namespace Mono.UIAutomation.Winforms
> 			{
> 				if (!ContainsItem (item))
> 					return;
>-
>-				SWF.DataGridViewCell oldCell = comboboxProvider.ComboBoxCell.DataGridView.CurrentCell;
>-				comboboxProvider.ComboBoxCell.DataGridView.CurrentCell = comboboxProvider.ComboBoxCell;
>-				comboboxProvider.ComboBoxCell.Value = GetValueMemberFromValue (item.ObjectItem);
>-				comboboxProvider.ComboBoxCell.DataGridView.CurrentCell = oldCell;
>+				
>+				Helper.SynchronizedSet (comboboxProvider.ComboBoxCell.DataGridView, delegate {
>+					SWF.DataGridViewCell oldCell = comboboxProvider.ComboBoxCell.DataGridView.CurrentCell;
>+					comboboxProvider.ComboBoxCell.DataGridView.CurrentCell = comboboxProvider.ComboBoxCell;
>+					comboboxProvider.ComboBoxCell.Value = GetValueMemberFromValue (item.ObjectItem);
>+					comboboxProvider.ComboBoxCell.DataGridView.CurrentCell = oldCell;
>+				});
> 			}
> 			
> 			public override void UnselectItem (ListItemProvider item)
>@@ -1185,8 +1210,9 @@ namespace Mono.UIAutomation.Winforms
> 				else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id)
> 					return comboboxProvider.GetPropertyValue (propertyId);
> 				else if (propertyId == AutomationElementIdentifiers.HasKeyboardFocusProperty.Id)
>-					return comboboxProvider.ComboBoxCell.DataGridView.Focused
>-						&& comboboxProvider.ComboBoxCell.DataGridView.CurrentCell == comboboxProvider.ComboBoxCell;
>+					return Helper.SynchronizedGet<SWF.DataGridView, bool> (comboboxProvider.ComboBoxCell.DataGridView, 
>+					                                                       c => comboboxProvider.ComboBoxCell.DataGridView.Focused
>+					                                                       && comboboxProvider.ComboBoxCell.DataGridView.CurrentCell == comboboxProvider.ComboBoxCell);
> 				else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id)
> 					// What when combobox is visible and scroll is hiden cell?
> 					return IsItemSelected (item);
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DateTimePickerProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DateTimePickerProvider.cs
>index 4133cb5..eecbfc3 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DateTimePickerProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DateTimePickerProvider.cs
>@@ -101,7 +101,7 @@ namespace Mono.UIAutomation.Winforms
> #region Private Methods
> 		private void UpdateChildren ()
> 		{
>-			if (control.ShowCheckBox) {
>+			if (Helper.SynchronizedGet<DateTimePicker, bool> (control, b => control.ShowCheckBox)) {
> 				if (checkBox == null) {
> 					checkBox = new DateTimePickerCheckBoxProvider (this);
> 					InsertChildProvider (checkBox, 0);
>@@ -114,7 +114,7 @@ namespace Mono.UIAutomation.Winforms
> 				}
> 			}
> 
>-			if (control.ShowUpDown) {
>+			if (Helper.SynchronizedGet<DateTimePicker, bool> (control, b => control.ShowUpDown)) {
> 				if (dropDownButton != null) {
> 					RemoveChildProvider (dropDownButton);
> 					dropDownButton.Terminate ();
>@@ -131,8 +131,12 @@ namespace Mono.UIAutomation.Winforms
> 
> 		private void AddSegmentItems ()
> 		{
>-			for (int i = 0; i < control.part_data.Length; i++) {
>-				DateTimePicker.PartData part_data = control.part_data [i];
>+			DateTimePicker.PartData []array 
>+				= Helper.SynchronizedGet<DateTimePicker, DateTimePicker.PartData[]> (control,
>+				                                                                     p => control.part_data);
>+			
>+			for (int i = 0; i < array.Length; i++) {
>+				DateTimePicker.PartData part_data = array [i];
> 				FragmentControlProvider prov = null;
> 
> 				switch (part_data.date_time_part) {
>@@ -205,9 +209,6 @@ namespace Mono.UIAutomation.Winforms
> 
> 				SetBehavior (TogglePatternIdentifiers.Pattern,
> 				             new ToggleProviderBehavior (this));
>-
>-				SetEvent (ProviderEventType.AutomationElementHasKeyboardFocusProperty,
>-					  new CheckboxAutomationHasKeyboardFocusPropertyEvent (this));
> 			}
> 
> 			public override IRawElementProviderFragmentRoot FragmentRoot {
>@@ -221,10 +222,7 @@ namespace Mono.UIAutomation.Winforms
> 				else if (propertyId == AEIds.IsContentElementProperty.Id)
> 					return false;
> 				else if (propertyId == AEIds.IsKeyboardFocusableProperty.Id)
>-					return true;
>-				else if (propertyId == AEIds.HasKeyboardFocusProperty.Id)
>-					return (bool) rootProvider.GetPropertyValue (AEIds.HasKeyboardFocusProperty.Id)
>-					       && ((DateTimePicker) rootProvider.Control).UIAIsCheckBoxSelected;
>+					return false;
> 				else if (propertyId == AEIds.ControlTypeProperty.Id)
> 					return ControlType.CheckBox.Id;
> 				else if (propertyId == AEIds.LocalizedControlTypeProperty.Id)
>@@ -294,7 +292,11 @@ namespace Mono.UIAutomation.Winforms
> 			}
> 
> 			public string Text {
>-				get { return PartData.GetText (((DateTimePicker) rootProvider.Control).Value); }
>+				get {
>+					DateTime time = Helper.SynchronizedGet<DateTimePicker, DateTime> ((DateTimePicker) rootProvider.Control,
>+					                                                                  v => ((DateTimePicker) rootProvider.Control).Value);
>+					return PartData.GetText (time); 
>+				}
> 			}
> 
> 			public override void Initialize ()
>@@ -305,11 +307,8 @@ namespace Mono.UIAutomation.Winforms
> 					  new Events.DateTimePicker.AutomationNamePropertyEvent (
> 						this, rootProvider));
> 
>-				SetEvent (ProviderEventType.AutomationElementIsEnabledProperty,
>+				SetEvent (ProviderEventType.AutomationElementNameProperty,
> 					  new PartAutomationIsEnabledPropertyEvent (this));
>-
>-				SetEvent (ProviderEventType.AutomationElementHasKeyboardFocusProperty,
>-					  new PartAutomationHasKeyboardFocusPropertyEvent (this));
> 			}
> 
> 			protected override object GetProviderPropertyValue (int propertyId)
>@@ -328,8 +327,9 @@ namespace Mono.UIAutomation.Winforms
> 					return Catalog.GetString ("text");
> 				else if (propertyId == AEIds.IsEnabledProperty.Id) {
> 					DateTimePicker picker = (DateTimePicker) Control;
>-					return Control.Enabled
>-					       && !(picker.ShowCheckBox && !picker.Checked);
>+					return Helper.SynchronizedGet<DateTimePicker, bool>(picker,
>+					                                                    b => picker.Enabled
>+					                                                    && !(picker.ShowCheckBox && !picker.Checked));
> 				}
> 				return base.GetProviderPropertyValue (propertyId);
> 			}
>@@ -362,10 +362,12 @@ namespace Mono.UIAutomation.Winforms
> 
> 			public override void SetFocus ()
> 			{
>-				if (dateTimePicker.ShowCheckBox && !dateTimePicker.Checked)
>-					return;
>-
>-				dateTimePicker.SelectPart (part_index);
>+				Helper.SynchronizedSet (dateTimePicker, delegate {
>+					if (dateTimePicker.ShowCheckBox && !dateTimePicker.Checked)
>+						return;
>+	
>+					dateTimePicker.SelectPart (part_index);
>+				});
> 			}
> 
> 			protected override object GetProviderPropertyValue (int propertyId)
>@@ -373,8 +375,7 @@ namespace Mono.UIAutomation.Winforms
> 				if (propertyId == AEIds.IsKeyboardFocusableProperty.Id)
> 					return true;
> 				else if (propertyId == AEIds.HasKeyboardFocusProperty.Id)
>-					return (bool) rootProvider.GetPropertyValue (AEIds.HasKeyboardFocusProperty.Id)
>-					       && part_data.Selected;
>+					return part_data.Selected;
> 				else if (propertyId == AEIds.ControlTypeProperty.Id)
> 					return ControlType.Spinner.Id;
> 				else if (propertyId == AEIds.LocalizedControlTypeProperty.Id)
>@@ -404,10 +405,12 @@ namespace Mono.UIAutomation.Winforms
> 
> 			public override void SetFocus ()
> 			{
>-				if (dateTimePicker.ShowCheckBox && !dateTimePicker.Checked)
>-					return;
>-
>-				((DateTimePicker) rootProvider.Control).SelectPart (part_index);
>+				Helper.SynchronizedSet (dateTimePicker, delegate {
>+					if (dateTimePicker.ShowCheckBox && !dateTimePicker.Checked)
>+						return;
>+	
>+					((DateTimePicker) rootProvider.Control).SelectPart (part_index);
>+				});
> 			}
> 
> 			public override void InitializeChildControlStructure ()
>@@ -415,7 +418,7 @@ namespace Mono.UIAutomation.Winforms
> 				base.InitializeChildControlStructure ();
> 
> 				Calendar cal = Thread.CurrentThread.CurrentCulture.Calendar;
>-				DateTime cur = dateTimePicker.Value;
>+				DateTime cur = Helper.SynchronizedGet<DateTimePicker, DateTime> (dateTimePicker, d => dateTimePicker.Value);
> 
> 				switch (part_data.date_time_part) {
> 				case DateTimePicker.DateTimePart.Month:
>@@ -483,8 +486,7 @@ namespace Mono.UIAutomation.Winforms
> 				if (propertyId == AEIds.NameProperty.Id)
> 					return itemProv.Text;
> 				else if (propertyId == AEIds.HasKeyboardFocusProperty.Id)
>-					return (bool) rootProvider.GetPropertyValue (AEIds.HasKeyboardFocusProperty.Id)
>-					       && IsItemSelected (prov);
>+					return IsItemSelected (prov);
> 				else if (propertyId == AEIds.BoundingRectangleProperty.Id)
> 					return GetProviderPropertyValue (AEIds.BoundingRectangleProperty.Id);
> 				return null;
>@@ -503,7 +505,7 @@ namespace Mono.UIAutomation.Winforms
> 			public bool IsItemSelected (ListItemProvider prov)
> 			{
> 				Calendar cal = Thread.CurrentThread.CurrentCulture.Calendar;
>-				DateTime cur = dateTimePicker.Value;
>+				DateTime cur = Helper.SynchronizedGet<DateTimePicker, DateTime> (dateTimePicker, d => dateTimePicker.Value);
> 				DateTime date = (DateTime) prov.ObjectItem;
> 
> 				switch (part_data.date_time_part) {
>@@ -525,10 +527,11 @@ namespace Mono.UIAutomation.Winforms
> 			
> 			public void SelectItem (ListItemProvider prov)
> 			{
>-				if (dateTimePicker.ShowCheckBox && !dateTimePicker.Checked)
>+				if (Helper.SynchronizedGet<DateTimePicker, bool> (dateTimePicker,
>+				                                                  b => dateTimePicker.ShowCheckBox && !dateTimePicker.Checked))
> 					return;
> 
>-				DateTime cur = dateTimePicker.Value;
>+				DateTime cur = Helper.SynchronizedGet<DateTimePicker, DateTime> (dateTimePicker, v => dateTimePicker.Value);
> 				Calendar cal = Thread.CurrentThread.CurrentCulture.Calendar;
> 				DateTime date = (DateTime) prov.ObjectItem;
> 
>@@ -538,7 +541,7 @@ namespace Mono.UIAutomation.Winforms
> 					break;
> 				case DateTimePicker.DateTimePart.DayName:
> 					cur = cur.AddDays (cal.GetDayOfWeek (date)
>-					                   - cal.GetDayOfWeek (dateTimePicker.Value));
>+					                   - cal.GetDayOfWeek (cur));
> 					break;
> 				case DateTimePicker.DateTimePart.AMPMSpecifier:
> 					if (date == amDate && IsTimePM (cur)) {
>@@ -563,7 +566,7 @@ namespace Mono.UIAutomation.Winforms
> 
> 			public ListItemProvider GetSelectedItem ()
> 			{
>-				DateTime cur = dateTimePicker.Value;
>+				DateTime cur = Helper.SynchronizedGet<DateTimePicker, DateTime> (dateTimePicker, v => dateTimePicker.Value);
> 				Calendar cal = Thread.CurrentThread.CurrentCulture.Calendar;
> 				DateTime searchDate = DateTime.MinValue;
> 
>@@ -591,8 +594,7 @@ namespace Mono.UIAutomation.Winforms
> 				if (propertyId == AEIds.IsKeyboardFocusableProperty.Id)
> 					return true;
> 				else if (propertyId == AEIds.HasKeyboardFocusProperty.Id)
>-					return (bool) rootProvider.GetPropertyValue (AEIds.HasKeyboardFocusProperty.Id)
>-					       && part_data.Selected;
>+					return part_data.Selected;
> 				else if (propertyId == AEIds.NameProperty.Id)
> 					return Text;
> 				else if (propertyId == AEIds.ControlTypeProperty.Id)
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DomainUpDownProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DomainUpDownProvider.cs
>index 6213d8d..f34d6a9 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DomainUpDownProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/DomainUpDownProvider.cs
>@@ -76,7 +76,9 @@ namespace Mono.UIAutomation.Winforms
> 
> 		public void FocusItem (object objectItem)
> 		{
>-			control.SelectedItem = objectItem;
>+			Helper.SynchronizedSet (control, delegate {
>+				control.SelectedItem = objectItem;
>+			});
> 		}
> #endregion
> 
>@@ -106,7 +108,7 @@ namespace Mono.UIAutomation.Winforms
> #region IListProvider Implementation
> 		public int IndexOfObjectItem (object obj)
> 		{
>-			return control.Items.IndexOf (obj);
>+			return Helper.SynchronizedGet<DomainUpDown, int> (control, i => control.Items.IndexOf (obj));
> 		}
> 
> 		public IProviderBehavior GetListItemBehaviorRealization (AutomationPattern pattern,
>@@ -135,7 +137,8 @@ namespace Mono.UIAutomation.Winforms
> 			if (propertyId == AEIds.NameProperty.Id) {
> 				return (string)prov.ObjectItem;
> 			} else if (propertyId == AEIds.HasKeyboardFocusProperty.Id) {
>-				return IsItemSelected (prov) && (string)prov.ObjectItem == Control.Text;
>+				return IsItemSelected (prov) 
>+					&& Helper.SynchronizedGet<DomainUpDown, bool> (control, i => (string) prov.ObjectItem == Control.Text);
> 			} else if (propertyId == AEIds.BoundingRectangleProperty.Id) {
> 				return GetProviderPropertyValue (AEIds.BoundingRectangleProperty.Id);
> 			}
>@@ -154,12 +157,13 @@ namespace Mono.UIAutomation.Winforms
> 
> 		public bool IsItemSelected (ListItemProvider prov)
> 		{
>-			int index = control.Items.IndexOf (prov.ObjectItem);
>+			int index 
>+				= Helper.SynchronizedGet<DomainUpDown, int> (control, i => control.Items.IndexOf (prov.ObjectItem));
> 			if (index < 0) {
> 				return false;
> 			}
> 
>-			return (index == control.SelectedIndex);
>+			return Helper.SynchronizedGet<DomainUpDown, bool> (control, b => index == control.SelectedIndex);
> 		}
> 
> 		public int SelectedItemsCount {
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/FormListener.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/FormListener.cs
>index 264ffa3..f5615e8 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/FormListener.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/FormListener.cs
>@@ -71,6 +71,8 @@ namespace Mono.UIAutomation.Winforms
> 			Application.FormAdded += new EventHandler (OnFormAdded);
> 
> 			initialized = true;
>+
>+			System.Threading.Thread.CurrentThread.Name = "UIA-Winforms";
> 		}
> 		
> #endregion
>@@ -101,7 +103,7 @@ namespace Mono.UIAutomation.Winforms
> 				//Initialize navigation to let children use it
> 				provider.Navigation = NavigationFactory.CreateNavigation (provider);
> 				provider.Navigation.Initialize ();
>-				
>+
> 				// TODO: Fill in rest of eventargs
> 				Helper.RaiseStructureChangedEvent (StructureChangeType.ChildAdded,
> 				                                   provider);
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/FormProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/FormProvider.cs
>index ce60998..648b67a 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/FormProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/FormProvider.cs
>@@ -59,7 +59,7 @@ namespace Mono.UIAutomation.Winforms
> 			
> 			// We keep a copy because we can't reference "form" after 
> 			// Disposed (used in Close()) called by WindowPatternWindowClosedEvent.
>-			owner = form.Owner;
>+			owner = form.InvokeSync (c => c.Owner);
> 			alreadyClosed = false;
> 		}
> 		
>@@ -153,10 +153,11 @@ namespace Mono.UIAutomation.Winforms
> 		
> 		public override IRawElementProviderFragment ElementProviderFromPoint (double x, double y)
> 		{
>-			if (x > form.Width || y > form.Height)
>+			if (form.InvokeSync (c => x > c.Width || y > c.Height))
> 				return null;
> 			
>-			Control child = form.GetChildAtPoint (new Point ((int)x, (int)y));
>+			Control child 
>+				= form.InvokeSync (c => c.GetChildAtPoint (new Point ((int) x, (int) y)));
> 			
> 			if (child != null) {
> 				Log.Debug (child.ToString ());
>@@ -177,8 +178,8 @@ namespace Mono.UIAutomation.Winforms
> 		
> 		public override IRawElementProviderFragment GetFocus ()
> 		{
>-			foreach (Control control in form.Controls) {
>-				if (control.Focused) {
>+			foreach (Control control in form.InvokeSync (f => f.Controls)) {
>+				if (control.InvokeSync (c => c.Focused)) {
> 					// TODO: Necessary to delve into child control
> 					// for focused element?
> 					
>@@ -205,10 +206,10 @@ namespace Mono.UIAutomation.Winforms
> 			if (AutomationInteropProvider.ClientsAreListening && !AlreadyClosed) {
> 				alreadyClosed = true;
> 
>-				if (owner == null)
>+				if (owner == null) {
> 					Helper.RaiseStructureChangedEvent (StructureChangeType.ChildRemoved,
> 					                                   this);
>-				else {
>+				} else {
> 					FormProvider ownerProvider 
> 						= ProviderFactory.FindProvider (owner) as FormProvider;
> 					if (ownerProvider != null)
>@@ -219,9 +220,11 @@ namespace Mono.UIAutomation.Winforms
> 
> 		private void SetupMainMenuProvider ()
> 		{
>-			if (form.Menu != null) {
>+			MainMenu mainMenu = form.InvokeSync (f => f.Menu);
>+			
>+			if (mainMenu != null) {
> 				mainMenuProvider = (MainMenuProvider)
>-					ProviderFactory.GetProvider (form.Menu);
>+					ProviderFactory.GetProvider (mainMenu);
> 				if (mainMenuProvider != null)
> 					AddChildProvider (mainMenuProvider);
> 			}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/FragmentControlProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/FragmentControlProvider.cs
>index d7eaee0..e39e848 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/FragmentControlProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/FragmentControlProvider.cs
>@@ -73,7 +73,7 @@ namespace Mono.UIAutomation.Winforms
> 				HandleContextMenuChanged (null, EventArgs.Empty);
> 				HandleContextMenuStripChanged (null, EventArgs.Empty);
> 
>-				visible = Control.Visible;
>+				visible = Control.InvokeSync (c => c.Visible);
> 			}
> 		}
> 
>@@ -83,7 +83,7 @@ namespace Mono.UIAutomation.Winforms
> 				contextMenuStrip.Opened -= HandleContextMenuStripOpened;
> 				contextMenuStrip.Closed -= HandleContextMenuStripClosed;
> 			}
>-			contextMenuStrip = Control.ContextMenuStrip;
>+			contextMenuStrip = Control.InvokeSync (c => c.ContextMenuStrip);
> 
> 			if (contextMenuStrip != null) {
> 				contextMenuStrip.Opened += HandleContextMenuStripOpened;
>@@ -116,7 +116,7 @@ namespace Mono.UIAutomation.Winforms
> 				contextMenu.Popup -= HandleContextMenuPopup;
> 				contextMenu.Collapse -= HandleContextMenuCollapse;
> 			}
>-			contextMenu = Control.ContextMenu;
>+			contextMenu = Control.InvokeSync (c => c.ContextMenu);
> 
> 			if (contextMenu != null) {
> 				contextMenu.Popup += HandleContextMenuPopup;
>@@ -260,6 +260,21 @@ namespace Mono.UIAutomation.Winforms
> 			RemoveChildProvider (true, childProvider);
> 		}
> 
>+		public override void Initialize ()
>+		{
>+			base.Initialize ();
>+
>+			if (Control != null) {
>+				Control.ContextMenuChanged += HandleContextMenuChanged;
>+				Control.ContextMenuStripChanged += HandleContextMenuStripChanged;
>+
>+				HandleContextMenuChanged (null, EventArgs.Empty);
>+				HandleContextMenuStripChanged (null, EventArgs.Empty);
>+
>+				visible = Control.InvokeSync (c => c.Visible);
>+			}
>+		}
>+
> 		public override void Terminate ()
> 		{
> 			base.Terminate ();
>@@ -276,7 +291,7 @@ namespace Mono.UIAutomation.Winforms
> 				Control.ControlAdded += OnControlAdded;
> 				Control.ControlRemoved += OnControlRemoved;
> 				
>-				foreach (SWF.Control childControl in Control.Controls)
>+				foreach (SWF.Control childControl in Control.InvokeSync (c => c.Controls))
> 					HandleComponentAdded (childControl);
> 
> 				Control.VisibleChanged += OnControlVisibleChanged;
>@@ -334,15 +349,17 @@ namespace Mono.UIAutomation.Winforms
> 		
> 		private void OnControlVisibleChanged (object sender, EventArgs args)
> 		{
>-			if (visible == Control.Visible)
>+			bool isVisible = Control.InvokeSync (c => c.Visible);
>+			
>+			if (visible == isVisible)
> 				return;
> 
>-			if (Control.Visible)
>+			if (isVisible)
> 				InitializeChildControlStructure ();
> 			else
> 				FinalizeChildControlStructure ();
> 
>-			visible = Control.Visible;
>+			visible = isVisible;
> 		}
> 
> 		private void OnChildControlVisibleChanged (object sender, EventArgs args)
>@@ -462,7 +479,7 @@ namespace Mono.UIAutomation.Winforms
> 		{
> 			SWF.Control control = null;
> 			if ((control = component as SWF.Control) != null)
>-				return control.Visible;
>+				return control.InvokeSync (c => c.Visible);
> 			else // Component based providers will need to override this method
> 				return false;
> 		}
>@@ -522,7 +539,7 @@ namespace Mono.UIAutomation.Winforms
> 		public virtual void SetFocus ()
> 		{
> 			if (Control != null)
>-				Control.Focus ();
>+				Control.InvokeSync (delegate { Control.Focus (); });
> 		}
> 
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/Helper.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/Helper.cs
>index 397f849..662ff9b 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/Helper.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/Helper.cs
>@@ -17,7 +17,7 @@
> // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 
> // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 
> // 
>-// Copyright (c) 2008 Novell, Inc. (http://www.novell.com) 
>+// Copyright (c) 2008,2009 Novell, Inc. (http://www.novell.com) 
> // 
> // Authors: 
> //	Mario Carrion <mcarrion@novell.com>
>@@ -27,10 +27,13 @@ using System;
> using System.Drawing;
> using System.Reflection;
> using System.Windows;
>+using System.ComponentModel;
> using SWF = System.Windows.Forms;
> using System.Windows.Automation;
> using System.Windows.Automation.Provider;
> 
>+using System.Threading;
>+
> namespace Mono.UIAutomation.Winforms
> {
> 
>@@ -68,18 +71,24 @@ namespace Mono.UIAutomation.Winforms
> 
> 		internal static Rect GetControlScreenBounds (Rectangle bounds, SWF.Control control, bool controlIsParent)
> 		{
>-			if (control == null || !control.Visible)
>+			if (control == null)
> 				return Rect.Empty;
>-			else if (controlIsParent)
>-				return Helper.RectangleToRect (control.RectangleToScreen (bounds));
>-			else if (control.Parent == null || control.TopLevelControl == null)
>-				return Helper.RectangleToRect (bounds);
> 			else {
>-
>-				if (control.FindForm () == control.Parent)
>-					return Helper.RectangleToRect (control.TopLevelControl.RectangleToScreen (bounds));
>-				else
>-					return Helper.RectangleToRect (control.Parent.RectangleToScreen (bounds));
>+//				SWF.Control c = control;
>+				return control.InvokeSync (c => {
>+					if (!c.Visible)
>+						return Rect.Empty;
>+					else if (controlIsParent)
>+						return Helper.RectangleToRect (c.RectangleToScreen (bounds));
>+					else if (c.Parent == null || c.TopLevelControl == null)
>+						return Helper.RectangleToRect (bounds);
>+					else {
>+						if (c.FindForm () == c.Parent)
>+							return Helper.RectangleToRect (c.TopLevelControl.RectangleToScreen (bounds));
>+						else
>+							return Helper.RectangleToRect (c.Parent.RectangleToScreen (bounds));
>+					}
>+				});
> 			}
> 		}
> 
>@@ -93,7 +102,7 @@ namespace Mono.UIAutomation.Winforms
> 			if (item.Owner == null)
> 				return item.Bounds;
> 			else
>-				return item.Owner.RectangleToScreen (item.Bounds);
>+				return item.Owner.InvokeSync (c => c.RectangleToScreen (item.Bounds));
> 		}
> 
> 		internal static object GetClickablePoint (SimpleControlProvider provider)
>@@ -131,11 +140,17 @@ namespace Mono.UIAutomation.Winforms
> 			else
> 				screen = Helper.RectangleToRect (SWF.Screen.GetWorkingArea (referenceControl));
> 
>-			IRawElementProviderFragment formProvider = null;
>-			if ((formProvider = ProviderFactory.FindProvider (referenceControl.FindForm ())) != null)
>-				return !formProvider.BoundingRectangle.IntersectsWith (bounds) || !bounds.IntersectsWith (screen);
>-
>-			return !bounds.IntersectsWith (screen);
>+//			SWF.Form form = Helper.SynchronizedGet<SWF.Control, SWF.Form> (referenceControl, v => referenceControl.FindForm ());
>+
>+//			return Helper.SynchronizedGet<SWF.Control, bool> (referenceControl, v => {
>+				IRawElementProviderFragment formProvider = null;
>+//				Console.WriteLine (">>referenceControl: {0}", referenceControl == null);
>+//				if ((formProvider = ProviderFactory.FindProvider (form)) != null)
>+				if ((formProvider = ProviderFactory.FindProvider (referenceControl.FindForm ())) != null)
>+					return !formProvider.BoundingRectangle.IntersectsWith (bounds) || !bounds.IntersectsWith (screen);
>+	
>+				return !bounds.IntersectsWith (screen);
>+//			});
> 		}
> 
> 		internal static bool IsListItemOffScreen (Rect itemBounds,
>@@ -144,7 +159,7 @@ namespace Mono.UIAutomation.Winforms
> 		                                          Rectangle headerBounds,
> 		                                          IScrollBehaviorObserver observer)
> 		{
>-			Rectangle listViewRectangle = containerControl.Bounds;
>+			Rectangle listViewRectangle = containerControl.InvokeSync (c => c.Bounds);
> 			if (visibleHeader) {
> 				listViewRectangle.Y += headerBounds.Height;
> 				listViewRectangle.Height -= headerBounds.Height;
>@@ -153,9 +168,10 @@ namespace Mono.UIAutomation.Winforms
> 				listViewRectangle.Height -= observer.HorizontalScrollBar.Height;
> 			if (observer.VerticalScrollBar.Visible)
> 				listViewRectangle.Width -= observer.VerticalScrollBar.Width;
>-
>-			Rect screen 
>-				= Helper.RectangleToRect (containerControl.Parent.RectangleToScreen (listViewRectangle));
>+			
>+			SWF.Control parent = containerControl.InvokeSync (c => c.Parent);
>+			Rect screen
>+				= parent.InvokeSync (c => Helper.RectangleToRect (c.RectangleToScreen (listViewRectangle)));
> 			return !itemBounds.IntersectsWith (screen);
> 		}
> 
>@@ -179,13 +195,15 @@ namespace Mono.UIAutomation.Winforms
> 			int imageY;
> 			int imageWidth;
> 			int imageHeight;
>-			int width = buttonBase.Width;
>-			int height = buttonBase.Height;
>+			int width = buttonBase.InvokeSync (c => c.Width);
>+			int height = buttonBase.InvokeSync (c => c.Height);
> 
>-			if (buttonBase.ImageIndex != -1)
>-				image = buttonBase.ImageList.Images [buttonBase.ImageIndex];
>-			else
>-				image = buttonBase.Image;
>+			image = buttonBase.InvokeSync (c => {
>+				if (c.ImageIndex != -1)
>+					return c.ImageList.Images [c.ImageIndex];
>+				else
>+					return c.Image;
>+			});
> 			
> 			if (image == null)
> 				return Rect.Empty;
>@@ -193,7 +211,7 @@ namespace Mono.UIAutomation.Winforms
> 			imageWidth = image.Width;
> 			imageHeight = image.Height;
> 		
>-			switch (buttonBase.ImageAlign) {
>+			switch (buttonBase.InvokeSync (c => c.ImageAlign)) {
> 				case ContentAlignment.TopLeft: {
> 					imageX = 5;
> 					imageY = 5;
>@@ -379,7 +397,7 @@ namespace Mono.UIAutomation.Winforms
> 					runtimeId = new int[] {0};
> 				else
> 					runtimeId = provider.GetRuntimeId ();
>-				
>+
> 				StructureChangedEventArgs invalidatedArgs 
> 					= new StructureChangedEventArgs (type, runtimeId);
> 				AutomationInteropProvider.RaiseStructureChangedEvent (provider, 
>@@ -445,6 +463,31 @@ namespace Mono.UIAutomation.Winforms
> 					s = s.Remove (i, 1);
> 			return s;
> 		}
>+
>+		internal static Return SynchronizedGet<Subject, Return> (Subject subject, Func<Subject, Return> verb)
>+			where Subject : SWF.Control
>+		{
>+			if (subject.InvokeRequired && subject.IsHandleCreated) {
>+//				return (Return) subject.Invoke (new Func<Subject, Func<Subject, Return>, Return> (SynchronizedGet<Subject, Return>),
>+//				                                 new object [] { subject, verb });
>+				return (Return) subject.Invoke (verb, subject);
>+			} else {
>+				return verb (subject);
>+			}
>+		}
>+
>+		internal static int Counter = 0;
>+
>+		internal static void SynchronizedSet (SWF.Control subject, Action<SWF.Control> verb)
>+		{
>+			if (subject.InvokeRequired && subject.IsHandleCreated) {
>+				subject.BeginInvoke (new Action<SWF.Control, Action<SWF.Control>> (SynchronizedSet), 
>+				                new object [] { subject, verb });
>+			} else {
>+				verb (subject);
>+			}
>+		}
>+		
> 		#endregion
> 		
> 		#region Private Static Methods
>@@ -491,4 +534,45 @@ namespace Mono.UIAutomation.Winforms
> 
> 		#endregion
> 	}
>+
>+	internal static class InvokeRequiredExtensionControl
>+	{	
>+		public static TResult InvokeSync<TControl, TResult> (this TControl control,
>+		                                                       Func<TControl, TResult> func)
>+			where TControl : SWF.Control
>+		{
>+			// This happens when a Winforms event raises an AutomationEvent
>+			// that raises an Atk event that needs to request Winforms data :-)
>+			if (AlreadyInvoked)
>+				return (TResult) func (control);
>+			
>+			if (control.InvokeRequired && control.IsHandleCreated) {
>+				if (Interlocked.CompareExchange (ref alreadyInvoked, 1, 0) == 1) {
>+					TResult result = (TResult) control.Invoke (func, control);
>+					Interlocked.CompareExchange (ref alreadyInvoked, 0, 1);
>+					return result;
>+				} else
>+					return (TResult) func (control);
>+			} else
>+				return (TResult) func (control);
>+		}
>+		
>+		public static void InvokeSync<TControl> (this TControl control, 
>+		                                            Action<TControl> action)
>+			where TControl : SWF.Control
>+		{
>+			// We don't care about AlreadyInvoked since we are not 
>+			// returning a value.
>+			if (control.InvokeRequired && control.IsHandleCreated)
>+				control.BeginInvoke (action, control);
>+			else
>+				action (control);
>+		}
>+
>+		private static bool AlreadyInvoked {
>+			get { return Interlocked.CompareExchange (ref alreadyInvoked, 0, 0) == 1; }
>+		}
>+		
>+		private static int alreadyInvoked = 0;
>+	}
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ListBoxProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ListBoxProvider.cs
>index 4b6b7ec..e9edd11 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ListBoxProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ListBoxProvider.cs
>@@ -56,11 +56,15 @@ namespace Mono.UIAutomation.Winforms
> 		#region Scroll Methods and Properties
> 
> 		protected override ScrollBar HorizontalScrollBar { 
>-			get { return listboxControl.UIAHScrollBar; }
>+			get { 
>+				return listboxControl.InvokeSync (c => c.UIAHScrollBar); 
>+			}
> 		}
> 
> 		protected override ScrollBar VerticalScrollBar { 
>-			get { return listboxControl.UIAVScrollBar; }
>+			get { 
>+				return listboxControl.InvokeSync (c => c.UIAVScrollBar); 
>+			}
> 		}
> 
> 		#endregion 
>@@ -88,10 +92,12 @@ namespace Mono.UIAutomation.Winforms
> 			else if (propertyId == AutomationElementIdentifiers.LocalizedControlTypeProperty.Id)
> 				return Catalog.GetString ("list");
> 			else if (propertyId == AutomationElementIdentifiers.NameProperty.Id) {
>-				if (string.IsNullOrEmpty (listboxControl.AccessibleName))
>-					return Helper.StripAmpersands (listboxControl.Text);
>-				else
>-					return listboxControl.AccessibleName;
>+				return listboxControl.InvokeSync (c => {
>+					if (string.IsNullOrEmpty (c.AccessibleName))
>+						return Helper.StripAmpersands (c.Text);
>+					else
>+						return c.AccessibleName;
>+				});
> 			} else
> 				return base.GetProviderPropertyValue (propertyId);
> 		}
>@@ -113,31 +119,37 @@ namespace Mono.UIAutomation.Winforms
> 		
> 		public override IRawElementProviderFragment GetFocus ()
> 		{
>-			return GetItemProviderFrom (this, listboxControl.Items [listboxControl.FocusedItem]);
>+			return listboxControl.InvokeSync (c => GetItemProviderFrom (this, c.Items [c.FocusedItem]));
> 		}
> 		
> 		public override void FocusItem (object objectItem)
> 		{
>-			listboxControl.FocusedItem = listboxControl.Items.IndexOf (objectItem);
>+			listboxControl.InvokeSync (delegate {
>+				listboxControl.FocusedItem = listboxControl.Items.IndexOf (objectItem);
>+			});
> 		}
> 
> 		public override void InitializeChildControlStructure ()
> 		{
> 			base.InitializeChildControlStructure ();
>-			
>-			listboxControl.Items.UIACollectionChanged += OnCollectionChanged;
>-			
>-			foreach (object objectItem in listboxControl.Items) {
>-				ListItemProvider item = GetItemProviderFrom (this, objectItem);
>-				AddChildProvider (item);
>-			}
>+
>+			listboxControl.InvokeSync (delegate {
>+				listboxControl.Items.UIACollectionChanged += OnCollectionChanged;
>+				
>+				foreach (object objectItem in listboxControl.Items) {
>+					ListItemProvider item = GetItemProviderFrom (this, objectItem);
>+					AddChildProvider (item);
>+				}
>+			});
> 		}
> 		
> 		public override void FinalizeChildControlStructure ()
> 		{
> 			base.FinalizeChildControlStructure ();
> 
>-			listboxControl.Items.UIACollectionChanged -= OnCollectionChanged;
>+			listboxControl.InvokeSync (delegate {
>+				listboxControl.Items.UIACollectionChanged -= OnCollectionChanged;
>+			});
> 		}
> 		
> 		#endregion
>@@ -148,27 +160,30 @@ namespace Mono.UIAutomation.Winforms
> 		                                             int propertyId)
> 		{
> 			if (propertyId == AutomationElementIdentifiers.NameProperty.Id)
>-				return listboxControl.GetItemText (item.ObjectItem);
>+				return listboxControl.InvokeSync (s => s.GetItemText (item.ObjectItem));
> 			
> 			if (ContainsItem (item) == false)
> 				return null;
> 
> 			if (propertyId == AutomationElementIdentifiers.HasKeyboardFocusProperty.Id)
>-				return listboxControl.Focused && item.Index == listboxControl.FocusedItem;
>+				return listboxControl.InvokeSync (s => s.Focused 
>+				                                  && item.Index == s.FocusedItem);
> 			else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id) {
>-				System.Drawing.Rectangle itemRec = System.Drawing.Rectangle.Empty;
>-				System.Drawing.Rectangle rectangle = listboxControl.Bounds;
>-
>-				itemRec = listboxControl.GetItemRectangle (item.Index);
>-				itemRec.X += rectangle.X;
>-				itemRec.Y += rectangle.Y;
>-				
>-				if (listboxControl.FindForm () == listboxControl.Parent)
>-					itemRec = listboxControl.TopLevelControl.RectangleToScreen (itemRec);
>-				else
>-					itemRec = listboxControl.Parent.RectangleToScreen (itemRec);
>+				return listboxControl.InvokeSync (c => {
>+					System.Drawing.Rectangle itemRec = System.Drawing.Rectangle.Empty;
>+					System.Drawing.Rectangle rectangle = c.Bounds;
> 	
>-				return Helper.RectangleToRect (itemRec);
>+					itemRec = c.GetItemRectangle (item.Index);
>+					itemRec.X += rectangle.X;
>+					itemRec.Y += rectangle.Y;
>+					
>+					if (c.FindForm () == c.Parent)
>+						itemRec = c.TopLevelControl.RectangleToScreen (itemRec);
>+					else
>+						itemRec = c.Parent.RectangleToScreen (itemRec);
>+		
>+					return Helper.RectangleToRect (itemRec);
>+				});
> 			} else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id)
> 				return Helper.IsListItemOffScreen ((Rect) item.GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id),
> 				                                   listboxControl,
>@@ -183,46 +198,53 @@ namespace Mono.UIAutomation.Winforms
> 		
> 		#region ListProvider: Specializations
> 		
>-		public override int SelectedItemsCount { 
>-			get { return listboxControl.SelectedItems.Count; }
>+		public override int SelectedItemsCount {
>+			get { return listboxControl.InvokeSync (c => c.SelectedItems.Count); }
> 		}
> 		
> 		public override int ItemsCount {
>-			get { return listboxControl.Items.Count; }
>+			get { return listboxControl.InvokeSync (c => c.Items.Count); }
> 		}
> 
> 		public override int IndexOfObjectItem (object objectItem)
> 		{
>-			return listboxControl.Items.IndexOf (objectItem);
>+			return listboxControl.InvokeSync (c => c.Items.IndexOf (objectItem));
> 		}
> 		
> 		public override IRawElementProviderSimple[] GetSelectedItems ()
> 		{
> 			ListItemProvider []items;
> 
>-			if (listboxControl == null || listboxControl.SelectedIndices.Count == 0)
>+			if (listboxControl == null 
>+			    || listboxControl.InvokeSync (c => c.SelectedIndices.Count == 0))
> 				return new ListItemProvider [0];
>-			
>-			items = new ListItemProvider [listboxControl.SelectedIndices.Count];		
>-			for (int index = 0; index < items.Length; index++) 
>-				items [index] = GetItemProviderFrom (this, listboxControl.Items [listboxControl.SelectedIndices [index]]);
>-			
>-			return items;
>+
>+			return listboxControl.InvokeSync (c => {
>+				items = new ListItemProvider [c.SelectedIndices.Count];		
>+				for (int index = 0; index < items.Length; index++) 
>+					items [index] = GetItemProviderFrom (this, c.Items [c.SelectedIndices [index]]);
>+				
>+				return items;
>+			});
> 		}
> 		
> 		public override void SelectItem (ListItemProvider item)
> 		{
>-			listboxControl.SetSelected (item.Index, true);
>+			listboxControl.InvokeSync (delegate {
>+				listboxControl.SetSelected (item.Index, true);
>+			});
> 		}
> 
> 		public override void UnselectItem (ListItemProvider item)
> 		{
>-			listboxControl.SetSelected (item.Index, false);
>+			listboxControl.InvokeSync (delegate {
>+				listboxControl.SetSelected (item.Index, false);
>+			});
> 		}
> 		
> 		public override bool IsItemSelected (ListItemProvider item)
> 		{
>-			return listboxControl.SelectedIndices.Contains (item.Index);
>+			return listboxControl.InvokeSync (b => b.SelectedIndices.Contains (item.Index));
> 		}
> 
> 		public override IConnectable GetListItemEventRealization (ProviderEventType eventType, 
>@@ -241,7 +263,9 @@ namespace Mono.UIAutomation.Winforms
> 		public override void ScrollItemIntoView (ListItemProvider item)
> 		{
> 			if (ContainsItem (item) == true)
>-				listboxControl.TopIndex = item.Index;
>+				listboxControl.InvokeSync (delegate {
>+					listboxControl.TopIndex = item.Index;
>+				});
> 		}
> 		
> 		#endregion
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ListViewProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ListViewProvider.cs
>index 316837a..d45e4b4 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ListViewProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ListViewProvider.cs
>@@ -17,7 +17,7 @@
> // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 
> // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 
> // 
>-// Copyright (c) 2008 Novell, Inc. (http://www.novell.com) 
>+// Copyright (c) 2008,2009 Novell, Inc. (http://www.novell.com) 
> // 
> // Authors: 
> //	Mario Carrion <mcarrion@novell.com>
>@@ -48,9 +48,9 @@ namespace Mono.UIAutomation.Winforms
> 		public ListViewProvider (SWF.ListView listView) : base (listView)
> 		{
> 			this.listView = listView;
>-
>-			lastView = listView.View;
>-			showGroups = listView.ShowGroups;
>+			
>+			lastView = listView.InvokeSync (c => c.View);
>+			showGroups = listView.InvokeSync (c => c.ShowGroups);
> 			groups = new Dictionary<SWF.ListViewGroup, ListViewGroupProvider> ();
> 		}
> 		
>@@ -70,12 +70,12 @@ namespace Mono.UIAutomation.Winforms
> 		protected override object GetProviderPropertyValue (int propertyId)
> 		{
> 			if (propertyId == AutomationElementIdentifiers.ControlTypeProperty.Id) {
>-				if (listView.View == SWF.View.Details)
>+				if (listView.InvokeSync (c => c.View == SWF.View.Details))
> 					return ControlType.DataGrid.Id;
> 				else
> 					return ControlType.List.Id;
> 			} else if (propertyId == AutomationElementIdentifiers.LocalizedControlTypeProperty.Id) {
>-				if (listView.View == SWF.View.Details)
>+				if (listView.InvokeSync (c => c.View == SWF.View.Details))
> 					return Catalog.GetString ("data grid");
> 				else
> 					return Catalog.GetString ("list");
>@@ -99,13 +99,15 @@ namespace Mono.UIAutomation.Winforms
> 			else if (behavior == SelectionPatternIdentifiers.Pattern) 
> 				return new SelectionProviderBehavior (this);
> 			else if (behavior == GridPatternIdentifiers.Pattern) {
>-				if (listView.ShowGroups == false || SWF.Application.VisualStylesEnabled == false
>-				    || listView.View == SWF.View.List || listView.View == SWF.View.Details)
>+				if (listView.InvokeSync (c => !c.ShowGroups
>+				                         || !SWF.Application.VisualStylesEnabled
>+				                         || c.View == SWF.View.List
>+				                         || c.View == SWF.View.Details))
> 				    return new GridProviderBehavior (this);
> 				else
> 					return null;
> 			} else if (behavior == TablePatternIdentifiers.Pattern) {
>-				if (listView.View == SWF.View.Details)
>+				if (listView.InvokeSync (c => c.View == SWF.View.Details))
> 					return new TableProviderBehavior (this);
> 				else
> 					return null;
>@@ -122,25 +124,23 @@ namespace Mono.UIAutomation.Winforms
> 				return new ListItemSelectionItemProviderBehavior (listItem);
> 			else if (behavior == GridItemPatternIdentifiers.Pattern) {
> 				// LAMESPEC: GridItem implemented *only* when: listView.View != SWF.View.Details
>-				if (listView.View != SWF.View.Details
>+				if (listView.InvokeSync (c => c.View != SWF.View.Details)
> 				    || IsBehaviorEnabled (GridPatternIdentifiers.Pattern))
> 					return new ListItemGridItemProviderBehavior (listItem);
> 				else
> 					return null;
>-			} else if (behavior == InvokePatternIdentifiers.Pattern && Control is SWF.MWFFileView) {
>-				return new ListItemInvokeProviderBehavior (listItem);
> 			} else if (behavior == ValuePatternIdentifiers.Pattern) {
>-				if (listView.LabelEdit == true)
>+				if (listView.InvokeSync (c => c.LabelEdit))
> 					return new ListItemValueProviderBehavior (listItem);
> 				else
> 					return null;
> 			} else if (behavior == TogglePatternIdentifiers.Pattern) {
>-				if (listView.CheckBoxes == true)
>+				if (listView.InvokeSync (c => c.CheckBoxes))
> 					return new ListItemToggleProviderBehavior (listItem);
> 				else
> 					return null;
> 			} else if (behavior == TableItemPatternIdentifiers.Pattern) {
>-				if (listView.View == SWF.View.Details)
>+				if (listView.InvokeSync (c => c.View == SWF.View.Details))
> 					return new ListItemTableItemProviderBehavior (listItem);
> 				else
> 					return null;
>@@ -162,26 +162,31 @@ namespace Mono.UIAutomation.Winforms
> 			if (propertyId == AutomationElementIdentifiers.NameProperty.Id)
> 				return ((SWF.ListViewItem) item.ObjectItem).Text;
> 			else if (propertyId == AutomationElementIdentifiers.HasKeyboardFocusProperty.Id)
>-				return listView.Focused && ((SWF.ListViewItem)item.ObjectItem).Focused;
>+				return listView.InvokeSync (c => c.Focused 
>+				                             && ((SWF.ListViewItem) item.ObjectItem).Focused);
> 			else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id) {
> 				int index = item.Index;
>-				if (index == -1 || index >= listView.UIAItemsLocationLength)
>+
>+				if (index == -1 
>+				    || listView.InvokeSync (l => index >= l.UIAItemsLocationLength))
> 					return Helper.RectangleToRect (SD.Rectangle.Empty);
> 
>-				SD.Rectangle itemRec = listView.GetItemRect (index);
>-				SD.Rectangle rectangle = listView.Bounds;
>+				SD.Rectangle itemRec 
>+					= listView.InvokeSync (c => c.GetItemRect (index));
>+				SD.Rectangle rectangle 
>+					= listView.InvokeSync (c => c.Bounds);
> 				
> 				itemRec.X += rectangle.X;
> 				itemRec.Y += rectangle.Y;
> 				
>-				itemRec = listView.Parent.RectangleToScreen (itemRec);
>+				itemRec = listView.InvokeSync (c => c.Parent.RectangleToScreen (itemRec));
> 				
> 				return Helper.RectangleToRect (itemRec);
> 			} else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id)
> 				return Helper.IsListItemOffScreen ((Rect) item.GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id),
> 				                                   listView, 
> 				                                   HeaderProvider != null,
>-				                                   listView.UIAHeaderControl,
>+				                                   listView.InvokeSync (c => c.UIAHeaderControl),
> 				                                   ScrollBehaviorObserver);
> 			else if (propertyId == AutomationElementIdentifiers.IsKeyboardFocusableProperty.Id)
> 				return true;
>@@ -221,17 +226,19 @@ namespace Mono.UIAutomation.Winforms
> 		}
> 		
> 		public override int ItemsCount { 
>-			get { return listView.Items.Count; }
>+			get { return listView.InvokeSync (c => c.Items.Count); }
> 		}
> 
> 		public override int IndexOfObjectItem (object objectItem)
> 		{
>-			return listView.Items.IndexOf (objectItem as SWF.ListViewItem);
>+			return listView.InvokeSync (c => c.Items.IndexOf (objectItem as SWF.ListViewItem));
> 		}
> 		
> 		public override void FocusItem (object objectItem)
> 		{
>-			((SWF.ListViewItem)objectItem).Focused = true;
>+			listView.InvokeSync (delegate { 
>+				((SWF.ListViewItem) objectItem).Focused = true; 
>+			});
> 		}
> 
> 		#endregion
>@@ -239,38 +246,47 @@ namespace Mono.UIAutomation.Winforms
> 		#region ListItem: Selection Methods and Properties
> 		
> 		public override int SelectedItemsCount {
>-			get { return listView.SelectedItems.Count; }
>+			get { return listView.InvokeSync (c => c.SelectedIndices.Count); }
> 		}
> 		
> 		public override bool IsItemSelected (ListItemProvider item)
> 		{
>-			return listView.SelectedIndices.Contains (item.Index);
>+			return listView.InvokeSync (c => c.SelectedIndices.Contains (item.Index));
> 		}
> 		
> 		public override IRawElementProviderSimple[] GetSelectedItems ()
> 		{
>-			if (listView.SelectedIndices.Count == 0)
>+			if (listView == null)
> 				return new ListItemProvider [0];
>-			else {
>-				ListItemProvider []providers = new ListItemProvider [listView.SelectedItems.Count];
>-
>-				for (int index = 0; index < listView.SelectedItems.Count; index++)
>-					providers [index] = GetItemProviderFrom (this, listView.SelectedItems [index], false);
> 			
>-				return providers;
>+			if (listView.InvokeSync (c => c.SelectedIndices.Count == 0))
>+				return new ListItemProvider [0];
>+			else {
>+				return listView.InvokeSync (c => {
>+					ListItemProvider []providers = new ListItemProvider [c.SelectedItems.Count];
>+	
>+					for (int index = 0; index < c.SelectedItems.Count; index++)
>+						providers [index] = GetItemProviderFrom (this, c.SelectedItems [index], false);
>+					
>+					return providers;
>+				});
> 			}
> 		}
> 		
> 		public override void SelectItem (ListItemProvider item)
> 		{
> 			if (ContainsItem (item) == true)
>-				listView.Items [item.Index].Selected = true;
>+				listView.InvokeSync (delegate {
>+					listView.Items [item.Index].Selected = true;
>+				});
> 		}
> 
> 		public override void UnselectItem (ListItemProvider item)
> 		{
> 			if (ContainsItem (item) == true)
>-				listView.Items [item.Index].Selected = false;
>+				listView.InvokeSync (delegate {
>+					listView.Items [item.Index].Selected = false;
>+				});
> 		}
> 		
> 		#endregion
>@@ -279,22 +295,26 @@ namespace Mono.UIAutomation.Winforms
> 		
> 		public override ToggleState GetItemToggleState (ListItemProvider item)
> 		{
>-			if (listView.CheckBoxes == false || item.Index == -1)
>+			if (listView.InvokeSync (c => !c.CheckBoxes)
>+			    || item.Index == -1)
> 				return ToggleState.Indeterminate;
> 
> 			if (ContainsItem (item) == true)
>-				return listView.Items [item.Index].Checked ? ToggleState.On : ToggleState.Off;
>+				return listView.InvokeSync (c => c.Items [item.Index].Checked)
>+					 ? ToggleState.On : ToggleState.Off;
> 			else
> 				return ToggleState.Indeterminate;
> 		}
> 		
> 		public override void ToggleItem (ListItemProvider item)
> 		{
>-			if (listView.CheckBoxes == false)
>+			if (listView.InvokeSync (c => !c.CheckBoxes))
> 				return;
> 				
> 			if (ContainsItem (item) == true)
>-				listView.Items [item.Index].Checked = !listView.Items [item.Index].Checked;
>+				listView.InvokeSync (delegate { 
>+					listView.Items [item.Index].Checked = !listView.Items [item.Index].Checked; 
>+				});
> 		}
> 		
> 		#endregion
>@@ -319,13 +339,15 @@ namespace Mono.UIAutomation.Winforms
> 			if (ContainsItem (item) == false)
> 				return;
> 			
>-			// According to http://msdn.microsoft.com/en-us/library/system.windows.forms.listview.topitem.aspx
>-			if (listView.View == SWF.View.LargeIcon 
>-			    || listView.View == SWF.View.SmallIcon
>-			    || listView.View == SWF.View.Tile)
>-				return;
>-			
>-			listView.TopItem = listView.Items [item.Index];
>+			listView.InvokeSync(delegate {
>+				// According to http://msdn.microsoft.com/en-us/library/system.windows.forms.listview.topitem.aspx
>+				if (listView.View == SWF.View.LargeIcon 
>+				    || listView.View == SWF.View.SmallIcon
>+				    || listView.View == SWF.View.Tile)
>+					return;
>+				
>+				listView.TopItem = listView.Items [item.Index];
>+			});
> 		}
> 		
> 		#endregion
>@@ -359,11 +381,11 @@ namespace Mono.UIAutomation.Winforms
> 		#region Scroll Methods and Properties
> 		
> 		protected override SWF.ScrollBar HorizontalScrollBar { 
>-			get { return listView.UIAHScrollBar; }
>+			get { return listView.InvokeSync (c => c.UIAHScrollBar); }
> 		}
> 
> 		protected override SWF.ScrollBar VerticalScrollBar { 
>-			get { return listView.UIAVScrollBar; }
>+			get { return listView.InvokeSync (c => c.UIAVScrollBar); }
> 		}
> 
> 		#endregion
>@@ -382,7 +404,7 @@ namespace Mono.UIAutomation.Winforms
> 		public SWF.ListViewGroup GetDefaultGroup ()
> 		{
> 			if (listViewNullGroup == null)
>-				listViewNullGroup = listView.UIADefaultListViewGroup;
>+				listViewNullGroup = listView.InvokeSync (c => c.UIADefaultListViewGroup);
> 
> 			return listViewNullGroup;
> 		}
>@@ -413,7 +435,8 @@ namespace Mono.UIAutomation.Winforms
> 			// no Groups are added.
> 
> 			// Using groups
>-			if (showGroups == true && listView.View != SWF.View.List
>+			if (showGroups == true 
>+			    && listView.InvokeSync (c => c.View != SWF.View.List)
> 			    && SWF.Application.VisualStylesEnabled == true) {
> 
> 				SWF.ListViewItem listViewItem = (SWF.ListViewItem) objectItem;
>@@ -456,7 +479,8 @@ namespace Mono.UIAutomation.Winforms
> 		private void FinalizeProviderFrom (object objectItem)
> 		{
> 			// Using groups
>-			if (showGroups == true && listView.View != SWF.View.List
>+			if (showGroups == true 
>+			    && listView.InvokeSync (c => c.View != SWF.View.List)
> 			    && SWF.Application.VisualStylesEnabled == true) {
> 
> 				SWF.ListViewItem listViewItem = (SWF.ListViewItem) objectItem;
>@@ -485,7 +509,7 @@ namespace Mono.UIAutomation.Winforms
> 
> 		private void UpdateChildrenStructure (bool forceUpdate)
> 		{
>-			bool updateView = lastView != listView.View;
>+			bool updateView = listView.InvokeSync (c => lastView != c.View);
> 			
> 			if (updateView == true || forceUpdate == true) {			
> 				foreach (ListViewGroupProvider groupProvider in groups.Values) {
>@@ -505,8 +529,8 @@ namespace Mono.UIAutomation.Winforms
> 				
> 				ClearItemsList ();
> 			}
>-
>-			if (listView.View == SWF.View.Details) {
>+			
>+			if (listView.InvokeSync (c => c.View == SWF.View.Details)) {
> 				if (header == null) {
> 					header = new ListViewHeaderProvider (listView);
> 					header.Initialize ();
>@@ -514,7 +538,8 @@ namespace Mono.UIAutomation.Winforms
> 				}
> 			}
> 			
>-			foreach (object objectItem in listView.Items)
>+			foreach (object objectItem 
>+			         in listView.InvokeSync (c => c.Items))
> 				InitializeProviderFrom (objectItem);
> 		}
> 
>@@ -533,16 +558,17 @@ namespace Mono.UIAutomation.Winforms
> 			
> 			UpdateChildrenStructure (false);
> 
>-			lastView = listView.View;
>+			lastView = listView.InvokeSync (c => c.View);
> 		}
> 
> 		private void OnUIAShowGroupsChanged (object sender, EventArgs args)
> 		{
> 			bool oldValue = showGroups;
>-			showGroups = listView.ShowGroups;
>+			showGroups = listView.InvokeSync (c => c.ShowGroups);
> 			
> 			//We will have to regenerate children
>-			if (listView.ShowGroups != oldValue && listView.View != SWF.View.List) {
>+			if (listView.InvokeSync (c => c.ShowGroups != oldValue 
>+			                         && c.View != SWF.View.List)) {
> 				UpdateChildrenStructure (true);
> 				if (SWF.Application.VisualStylesEnabled == true)
> 					SetBehavior (GridPatternIdentifiers.Pattern,
>@@ -664,19 +690,21 @@ namespace Mono.UIAutomation.Winforms
> 
> 			private Rect HeaderRectangle {
> 				get {
>-					// Lets Union the Header Bounds			
>-					SD.Rectangle headerRec = listView.UIAGetHeaderBounds (group);
>-					SD.Rectangle rectangle = listView.Bounds;
>-					
>-					headerRec.X += rectangle.X;
>-					headerRec.Y += rectangle.Y;
>-					
>-					if (listView.FindForm () == listView.Parent)
>-						headerRec = listView.TopLevelControl.RectangleToScreen (headerRec);
>-					else
>-						headerRec = listView.Parent.RectangleToScreen (headerRec);
>-					
>-					return Helper.RectangleToRect (headerRec);
>+					return listView.InvokeSync (c => {	
>+						// Lets Union the Header Bounds			
>+						SD.Rectangle headerRec = c.UIAGetHeaderBounds (group);
>+						SD.Rectangle rectangle = c.Bounds;
>+						
>+						headerRec.X += rectangle.X;
>+						headerRec.Y += rectangle.Y;
>+						
>+						if (c.FindForm () == c.Parent)
>+							headerRec = c.TopLevelControl.RectangleToScreen (headerRec);
>+						else
>+							headerRec = c.Parent.RectangleToScreen (headerRec);
>+						
>+						return Helper.RectangleToRect (headerRec);
>+					});
> 				}
> 			}
> 
>@@ -780,27 +808,31 @@ namespace Mono.UIAutomation.Winforms
> 			public override void InitializeChildControlStructure ()
> 			{
> 				base.InitializeChildControlStructure ();
>-
>-				//Event used to update columns in ListItem when View.Details
>-				listView.Columns.UIACollectionChanged += OnUIAColumnsCollectionChanged;
>-
>-				foreach (SWF.ColumnHeader column in listView.Columns) {
>-					ListViewHeaderItemProvider item 
>-						= new ListViewHeaderItemProvider (this, column);
>-					item.Initialize ();
>-					AddChildProvider (item);
>-					headerItems [column] = item;
>-				}
>+				
>+				listView.InvokeSync (delegate {
>+					//Event used to update columns in ListItem when View.Details
>+					listView.Columns.UIACollectionChanged += OnUIAColumnsCollectionChanged;
>+	
>+					foreach (SWF.ColumnHeader column in listView.Columns) {
>+						ListViewHeaderItemProvider item 
>+							= new ListViewHeaderItemProvider (this, column);
>+						item.Initialize ();
>+						AddChildProvider (item);
>+						headerItems [column] = item;
>+					}
>+				});
> 			}
> 
> 			public override void FinalizeChildControlStructure ()
> 			{
> 				base.FinalizeChildControlStructure ();
>+				
>+				listView.InvokeSync (delegate {
>+					//Event used to update columns in ListItem when View.Details
>+					listView.Columns.UIACollectionChanged -= OnUIAColumnsCollectionChanged;
>+				});
> 
>-				//Event used to update columns in ListItem when View.Details
>-				listView.Columns.UIACollectionChanged -= OnUIAColumnsCollectionChanged;
>-
>-				foreach (ListViewHeaderItemProvider item in headerItems .Values)
>+				foreach (ListViewHeaderItemProvider item in headerItems.Values)
> 					item.Terminate ();
> 			}
> 
>@@ -899,18 +931,20 @@ namespace Mono.UIAutomation.Winforms
> 				else if (propertyId == AutomationElementIdentifiers.IsEnabledProperty.Id)
> 					return true;
> 				else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id) {
>-					int indexOf = headerProvider.ListView.Columns.IndexOf (columnHeader);
>-					Rect headerBounds
>-						= (Rect) headerProvider.GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id);
>-					if (headerBounds.IsEmpty)
>+					return headerProvider.ListView.InvokeSync (c => {
>+						int indexOf = c.Columns.IndexOf (columnHeader);
>+						Rect headerBounds
>+							= (Rect) headerProvider.GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id);
>+						if (headerBounds.IsEmpty)
>+							return headerBounds;
>+						
>+						for (int index = 0; index < indexOf; index++)
>+							headerBounds.X += c.Columns [index].Width;
>+						
>+						headerBounds.Width = c.Columns [indexOf].Width;
>+						
> 						return headerBounds;
>-					
>-					for (int index = 0; index < indexOf; index++)
>-						headerBounds.X += headerProvider.ListView.Columns [index].Width;
>-					
>-					headerBounds.Width = headerProvider.ListView.Columns [indexOf].Width;
>-					
>-					return headerBounds;
>+					});					
> 				} else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id) {
> 					Rect bounds 
> 						= (Rect) GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id);
>@@ -960,11 +994,13 @@ namespace Mono.UIAutomation.Winforms
> 
> 			public ListViewListItemEditProvider GetEditProviderAtColumn (int column)
> 			{
>-				if (column < 0 || column >= listView.Columns.Count)
>+				if (column < 0 
>+				    || listView.InvokeSync (c => column >= c.Columns.Count))
> 					return null;
> 
>-				ListViewListItemEditProvider editProvider = null;				
>-				providers.TryGetValue (listView.Columns [column], out editProvider);
>+				ListViewListItemEditProvider editProvider = null;
>+				providers.TryGetValue (listView.InvokeSync (c => c.Columns [column]), 
>+				                       out editProvider);
> 
> 				return editProvider;
> 			}
>@@ -975,7 +1011,7 @@ namespace Mono.UIAutomation.Winforms
> 
> 			protected override object GetProviderPropertyValue (int propertyId)
> 			{
>-				if (ListView.View == SWF.View.Details) {
>+				if (ListView.InvokeSync (c => c.View == SWF.View.Details)) {
> 					//According to: http://msdn.microsoft.com/en-us/library/ms742561.aspx
> 					if (propertyId == AutomationElementIdentifiers.ControlTypeProperty.Id)
> 						return ControlType.DataItem.Id;
>@@ -1013,7 +1049,7 @@ namespace Mono.UIAutomation.Winforms
> 				if (lastView == SWF.View.Details)
> 					AddEditChildren ();
> 
>-				if (listView.CheckBoxes == true) {
>+				if (listView.InvokeSync (c => c.CheckBoxes)) {
> 					checkboxProvider = new ListViewListItemCheckBoxProvider (this);
> 					checkboxProvider.Initialize ();
> 					AddChildProvider (checkboxProvider);
>@@ -1036,7 +1072,8 @@ namespace Mono.UIAutomation.Winforms
> 
> 			private void AddEditChildren ()
> 			{
>-				foreach (SWF.ColumnHeader column in listView.Columns) {
>+				foreach (SWF.ColumnHeader column 
>+				         in listView.InvokeSync (c => c.Columns)) {
> 					ListViewListItemEditProvider editProvider 
> 						= new ListViewListItemEditProvider (column, this);
> 					editProvider.Initialize ();
>@@ -1072,16 +1109,16 @@ namespace Mono.UIAutomation.Winforms
> 				if (lastView == SWF.View.Details) {
> 					providers.Clear ();
> 					OnNavigationChildrenCleared ();
>-				} else if (listView.View == SWF.View.Details)
>+				} else if (listView.InvokeSync (c => c.View == SWF.View.Details))
> 					AddEditChildren ();
> 	
>-				lastView = listView.View;
>+				lastView = listView.InvokeSync (c => c.View);
> 			}
> 
> 			private void OnUIAColumnsCollectionChanged (object sender, 
> 			                                            CollectionChangeEventArgs args)
> 			{
>-				if (listView.View != SWF.View.Details)
>+				if (listView.InvokeSync (c => c.View != SWF.View.Details))
> 					return;
> 
> 				SWF.ColumnHeader column = (SWF.ColumnHeader) args.Element;
>@@ -1188,7 +1225,7 @@ namespace Mono.UIAutomation.Winforms
> 					IValueProvider valueProvider = (IValueProvider) GetBehavior (ValuePatternIdentifiers.Pattern);
> 					return valueProvider.Value;
> 				} else if (propertyId == AutomationElementIdentifiers.IsKeyboardFocusableProperty.Id)
>-					return IsFirstColumn || itemProvider.ListView.FullRowSelect;
>+					return IsFirstColumn || itemProvider.ListView.InvokeSync (c => c.FullRowSelect);
> 				else if (propertyId == AutomationElementIdentifiers.HasKeyboardFocusProperty.Id) {
> 					if (IsFirstColumn)
> 						return itemProvider.GetPropertyValue (propertyId);
>@@ -1199,23 +1236,26 @@ namespace Mono.UIAutomation.Winforms
> 				else if (propertyId == AutomationElementIdentifiers.LabeledByProperty.Id)
> 					return null;
> 				else if (propertyId == AutomationElementIdentifiers.HelpTextProperty.Id) {
>-					if (ItemProvider.ListView.Columns.Count == 0 || ItemProvider.ListView.Columns [0] == header)
>+					if (itemProvider.ListView.InvokeSync (c => c.Columns.Count == 0 
>+					                                      || c.Columns [0] == header))
> 						return string.Empty;
> 					else
> 						return itemProvider.ListViewItem.ToolTipText;
> 				} else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id) {
>-					int indexOf = itemProvider.ListView.Columns.IndexOf (header);
>-					Rect itemBounds
>-						= (Rect) itemProvider.GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id);
>-					if (itemBounds.IsEmpty)
>+					return itemProvider.ListView.InvokeSync (c => {
>+						int indexOf = c.Columns.IndexOf (header);
>+						Rect itemBounds
>+							= (Rect) itemProvider.GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id);
>+						if (itemBounds.IsEmpty)
>+							return itemBounds;
>+	
>+						for (int index = 0; index < indexOf; index++)
>+							itemBounds.X += c.Columns [index].Width;
>+						
>+						itemBounds.Width = c.Columns [indexOf].Width;
>+						
> 						return itemBounds;
>-
>-					for (int index = 0; index < indexOf; index++)
>-						itemBounds.X += itemProvider.ListView.Columns [index].Width;
>-					
>-					itemBounds.Width = itemProvider.ListView.Columns [indexOf].Width;
>-					
>-					return itemBounds;
>+					});
> 				} else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id)
> 					return Helper.IsListItemOffScreen ((Rect) GetPropertyValue (AutomationElementIdentifiers.BoundingRectangleProperty.Id),
> 					                                   ItemProvider.ListView, 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MenuStripProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MenuStripProvider.cs
>index 50c7156..56d0965 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MenuStripProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MenuStripProvider.cs
>@@ -54,7 +54,7 @@ namespace Mono.UIAutomation.Winforms
> 			else if (propertyId == AEIds.LocalizedControlTypeProperty.Id)
> 				return Catalog.GetString ("menu bar");
> 			else if (propertyId == AEIds.OrientationProperty.Id) {
>-				switch (menu.Orientation) {
>+				switch (menu.InvokeSync (o => menu.Orientation)) {
> 				case Orientation.Vertical:
> 					return OrientationType.Vertical;
> 				case Orientation.Horizontal:
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MessageBoxFormProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MessageBoxFormProvider.cs
>index 6b86b29..b26a0c3 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MessageBoxFormProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MessageBoxFormProvider.cs
>@@ -50,7 +50,7 @@ namespace Mono.UIAutomation.Winforms
> 		#region Public Methods
> 
> 		public SWF.MessageBox.MessageBoxForm Form {
>-				get { return form; }
>+			get { return form; }
> 		}
> 		
> 		#endregion
>@@ -67,9 +67,10 @@ namespace Mono.UIAutomation.Winforms
> 				AddChildProvider (labelProvider);
> 			}
> 			if (imageProvider == null
>-			    && form.UIAIconRectangle.Width >= 0
>-			    && form.UIAIconRectangle.Height >= 0) {
>-				
>+			    && Helper.SynchronizedGet<SWF.Form, bool> (form, 
>+			                                               w => form.UIAIconRectangle.Width >= 0)
>+			    && Helper.SynchronizedGet<SWF.Form, bool> (form, 
>+			                                               h => form.UIAIconRectangle.Height >= 0)) {
> 				imageProvider = new MessageBoxImageProvider (this);
> 				imageProvider.Initialize ();
> 				AddChildProvider (imageProvider);
>@@ -135,7 +136,8 @@ namespace Mono.UIAutomation.Winforms
> 				} else if (propertyId == AutomationElementIdentifiers.HasKeyboardFocusProperty.Id)
> 					return false;
> 				else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id)
>-					return Helper.RectangleToRect (provider.Control.TopLevelControl.RectangleToScreen (provider.Form.UIAMessageRectangle));
>+					return Helper.SynchronizedGet<SWF.Control, Rect> (provider.Control,
>+					                                              r => Helper.RectangleToRect (provider.Control.TopLevelControl.RectangleToScreen (provider.Form.UIAMessageRectangle)));
> 				else if (propertyId == AutomationElementIdentifiers.ClickablePointProperty.Id)
> 					return Helper.GetClickablePoint (this);
> 				else
>@@ -190,7 +192,8 @@ namespace Mono.UIAutomation.Winforms
> 				} else if (propertyId == AutomationElementIdentifiers.HasKeyboardFocusProperty.Id)
> 					return false;
> 				else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id)
>-					return Helper.RectangleToRect (provider.Control.TopLevelControl.RectangleToScreen (provider.Form.UIAIconRectangle));
>+					return Helper.SynchronizedGet<SWF.Control, Rect> (provider.Control,
>+					                                              r => Helper.RectangleToRect (provider.Control.TopLevelControl.RectangleToScreen (provider.Form.UIAIconRectangle)));
> 				else if (propertyId == AutomationElementIdentifiers.ClickablePointProperty.Id)
> 					return Helper.GetClickablePoint (this);
> 				else
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MonthCalendarDataGridProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MonthCalendarDataGridProvider.cs
>index 8d3de21..c27e640 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MonthCalendarDataGridProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MonthCalendarDataGridProvider.cs
>@@ -131,7 +131,9 @@ namespace Mono.UIAutomation.Winforms
> 				throw new ArgumentException ("col");
> 			}
> 
>-			SelectionRange range = calendar.GetDisplayRange (false);
>+			SelectionRange range
>+				= Helper.SynchronizedGet<MonthCalendar, SelectionRange> (calendar, 
>+				                                                         c => calendar.GetDisplayRange (false));
> 			DateTime date = range.Start.AddDays (
> 				col + (row * MonthCalendarProvider.DaysInWeek)
> 			);
>@@ -146,19 +148,26 @@ namespace Mono.UIAutomation.Winforms
> 
> #region Selection Helper Methods
> 		public bool CanSelectMultiple {
>-			get { return calendar.MaxSelectionCount > 1; }
>+			get { 
>+				return Helper.SynchronizedGet<MonthCalendar, bool> (calendar, 
>+				                                                    c => calendar.MaxSelectionCount > 1);
>+			}
> 		}
> 
> 		public int SelectedItemCount {
> 			get {
>-				SelectionRange range = calendar.SelectionRange;
>+				SelectionRange range 
>+					= Helper.SynchronizedGet<MonthCalendar, SelectionRange> (calendar, 
>+					                                                         c => calendar.SelectionRange);
> 				return (range.End - range.Start).Days;
> 			}
> 		}
> 
> 		public IRawElementProviderSimple[] GetSelection ()
> 		{
>-			SelectionRange range = calendar.SelectionRange;
>+			SelectionRange range 
>+				= Helper.SynchronizedGet<MonthCalendar, SelectionRange> (calendar,
>+				                                                         c => calendar.SelectionRange);
> 			List<IRawElementProviderSimple> selectedItems
> 				= new List<IRawElementProviderSimple> ();
> 
>@@ -188,11 +197,14 @@ namespace Mono.UIAutomation.Winforms
> 				return;
> 			}
> 
>-			SelectionRange range = calendar.SelectionRange;
>+			SelectionRange range 
>+				= Helper.SynchronizedGet<MonthCalendar, SelectionRange> (calendar,
>+				                                                         c => calendar.SelectionRange);
> 
> 			int proposedDays = (range.End - itemProvider.Date).Days;
> 			if (range.Start > itemProvider.Date) {
>-				if (proposedDays > calendar.MaxSelectionCount) {
>+				if (proposedDays > Helper.SynchronizedGet<MonthCalendar, int> (calendar,
>+				                                                               c => calendar.MaxSelectionCount)) {
> 					throw new InvalidOperationException ();
> 				}
> 
>@@ -201,14 +213,17 @@ namespace Mono.UIAutomation.Winforms
> 
> 			proposedDays = (itemProvider.Date - range.Start).Days;
> 			if (range.End < itemProvider.Date) {
>-				if (proposedDays > calendar.MaxSelectionCount) {
>+				if (proposedDays > Helper.SynchronizedGet<MonthCalendar, int> (calendar,
>+				                                                               c => calendar.MaxSelectionCount)) {
> 					throw new InvalidOperationException ();
> 				}
> 
> 				range.End = itemProvider.Date;
> 			}
>-			
>-			calendar.SelectionRange = range;
>+
>+			Helper.SynchronizedSet (calendar, delegate {
>+				calendar.SelectionRange = range;
>+			});
> 		}
> 
> 		// We can only allow removing from selection on the endpoints.
>@@ -219,7 +234,9 @@ namespace Mono.UIAutomation.Winforms
> 				throw new InvalidOperationException ();
> 			}
> 
>-			SelectionRange range = calendar.SelectionRange;
>+			SelectionRange range 
>+				= Helper.SynchronizedGet<MonthCalendar, SelectionRange> (calendar,
>+				                                                         c => calendar.SelectionRange);
> 			if (range.Start == range.End) {
> 				throw new InvalidOperationException ();
> 			}
>@@ -239,14 +256,18 @@ namespace Mono.UIAutomation.Winforms
> 
> 		public void SelectItem (MonthCalendarListItemProvider itemProvider)
> 		{
>-			calendar.SelectionRange
>-				= new SelectionRange (itemProvider.Date,
>-			                              itemProvider.Date);
>+			Helper.SynchronizedSet (calendar, delegate {
>+				calendar.SelectionRange
>+					= new SelectionRange (itemProvider.Date,
>+					                      itemProvider.Date);
>+			});
> 		}
> 
> 		public bool IsItemSelected (MonthCalendarListItemProvider itemProvider)
> 		{
>-			SelectionRange range = calendar.SelectionRange;
>+			SelectionRange range 
>+				= Helper.SynchronizedGet<MonthCalendar, SelectionRange> (calendar,
>+				                                                         c => calendar.SelectionRange);
> 			return (range.Start <= itemProvider.Date
> 			        && range.End >= itemProvider.Date);
> 		}
>@@ -256,8 +277,9 @@ namespace Mono.UIAutomation.Winforms
> 		private void AddChildren ()
> 		{
> 			MonthCalendarListItemProvider item;
>-			SelectionRange range = calendar.GetDisplayRange (false);
>-
>+			SelectionRange range
>+				= Helper.SynchronizedGet<MonthCalendar, SelectionRange> (calendar,
>+				                                                         c => calendar.GetDisplayRange (false));
> 			for (DateTime d = range.Start;
> 			     d <= range.End; d = d.AddDays (1)) {
> 				int days = (d - range.Start).Days;
>@@ -303,7 +325,9 @@ namespace Mono.UIAutomation.Winforms
> 
> 		private void OnDateChanged (object o, DateRangeEventArgs args)
> 		{
>-			SelectionRange range = calendar.GetDisplayRange (false);
>+			SelectionRange range
>+				= Helper.SynchronizedGet<MonthCalendar, SelectionRange> (calendar,
>+				                                                         c => calendar.GetDisplayRange (false));
> 			if (displayRange != null
> 			    && range.Start == displayRange.Start
> 			    && range.End == displayRange.End)
>@@ -405,7 +429,9 @@ namespace Mono.UIAutomation.Winforms
> 			DateTime[] days = new DateTime[days_in_week];
> 
> 			DateTime sunday = new DateTime (2006, 10, 1);
>-			DayOfWeek first_day_of_week = calendar.GetDayOfWeek (calendar.FirstDayOfWeek);
>+			DayOfWeek first_day_of_week 
>+				= Helper.SynchronizedGet<MonthCalendar, DayOfWeek> (calendar,
>+				                                                    c => calendar.GetDayOfWeek (calendar.FirstDayOfWeek));
> 
> 			for (int i = 0; i < days.Length; i++) {
> 				int position = i - (int) first_day_of_week;
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MonthCalendarListItemProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MonthCalendarListItemProvider.cs
>index 7bd29e8..556b21a 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MonthCalendarListItemProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MonthCalendarListItemProvider.cs
>@@ -56,7 +56,7 @@ namespace Mono.UIAutomation.Winforms
> 			get { return dataGridProvider; }
> 		}
> 
>-		public MonthCalendarProvider MonthCalendarProvider {
>+		public MonthCalendarProvider MonthCalendarProvider1 {
> 			get { return calendarProvider; }
> 		}
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MonthCalendarProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MonthCalendarProvider.cs
>index f5f72f0..adac4d5 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MonthCalendarProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/MonthCalendarProvider.cs
>@@ -95,7 +95,8 @@ namespace Mono.UIAutomation.Winforms
> 			else if (propertyId == AEIds.LocalizedControlTypeProperty.Id)
> 				return Catalog.GetString ("calendar");
> 			else if (propertyId == AEIds.NameProperty.Id)
>-				return monthCalendar.SelectionStart.ToShortDateString ();
>+				return Helper.SynchronizedGet<MonthCalendar, string> (
>+					monthCalendar, m => monthCalendar.SelectionStart.ToShortDateString ());
> 			return base.GetProviderPropertyValue (propertyId);
> 		}
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/PanelProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/PanelProvider.cs
>index 1b952a1..b3b77e2 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/PanelProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/PanelProvider.cs
>@@ -38,7 +38,7 @@ namespace Mono.UIAutomation.Winforms
> 		}
> 
> 		public override Component Container  {
>-			get { return Control.Parent; }
>+			get { return Control.InvokeSync (c => c.Parent); }
> 		}
> 
> 	}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/PropertyGridTextBoxProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/PropertyGridTextBoxProvider.cs
>index b51d743..05849c7 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/PropertyGridTextBoxProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/PropertyGridTextBoxProvider.cs
>@@ -50,8 +50,8 @@ namespace Mono.UIAutomation.Winforms
> 		private static TextBoxBase GetPrivateTextBox (PGTextBox pgTextBox)
> 		{
> 			// TODO: Replace this with an internal property in SWF
>-			return Helper.GetPrivateField<TextBox> (
>-				typeof (PGTextBox), pgTextBox, "textbox"
>+			return Helper.SynchronizedGet<PGTextBox, TextBoxBase> (pgTextBox,
>+				t => Helper.GetPrivateField<TextBox> (typeof (PGTextBox), pgTextBox, "textbox")
> 			);
> 		}
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/PropertyGridViewProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/PropertyGridViewProvider.cs
>index ae4d0f8..fcec01b 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/PropertyGridViewProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/PropertyGridViewProvider.cs
>@@ -47,7 +47,10 @@ namespace Mono.UIAutomation.Winforms
> 	{
> #region Public Properties
> 		public override int SelectedItemsCount {
>-			get { return propertyGrid.SelectedGridItem == null ? 0 : 1; }
>+			get {
>+				return Helper.SynchronizedGet<PropertyGrid, int> (
>+					propertyGrid, p => p.SelectedGridItem == null ? 0 : 1);
>+			}
> 		}
> 
> 		public override int ItemsCount {
>@@ -64,9 +67,14 @@ namespace Mono.UIAutomation.Winforms
> 			: base (propertyGridView)
> 		{
> 			view = propertyGridView;
>-			propertyGrid = Helper.GetPrivateField<PropertyGrid> (
>-				typeof (PropertyGridView), view,
>-				"property_grid");
>+
>+			propertyGrid = Helper.SynchronizedGet<PropertyGridView, PropertyGrid> (
>+				propertyGridView, delegate {
>+					return Helper.GetPrivateField<PropertyGrid> (
>+						typeof (PropertyGridView),
>+						view, "property_grid");
>+				}
>+			);
> 		}
> 
> 		public override void UnselectItem (ListItemProvider item)
>@@ -80,7 +88,9 @@ namespace Mono.UIAutomation.Winforms
> 			if (gridItem == null)
> 				return;
> 			
>-			propertyGrid.SelectedGridItem = gridItem;
>+			Helper.SynchronizedSet (propertyGrid, delegate {
>+				propertyGrid.SelectedGridItem = gridItem;
>+			});
> 		}
> 
> 		public override void ScrollItemIntoView (ListItemProvider item)
>@@ -99,7 +109,9 @@ namespace Mono.UIAutomation.Winforms
> 
> 		public override bool IsItemSelected (ListItemProvider item)
> 		{
>-			return (item.ObjectItem == propertyGrid.SelectedGridItem);
>+			return Helper.SynchronizedGet<PropertyGrid, bool> (
>+				propertyGrid, p => p.SelectedGridItem == item.ObjectItem
>+			);
> 		}
> 
> 		public override int IndexOfObjectItem (object objectItem)
>@@ -250,9 +262,6 @@ namespace Mono.UIAutomation.Winforms
> 		private void AddChildren ()
> 		{
> 			GridItem root = propertyGrid.RootGridItem;
>-			if (root == null)
>-				return;
>-			
> 			foreach (GridItem cat in root.GridItems) {
> 				foreach (GridItem item in cat.GridItems) {
> 					PropertyGridListItemProvider itemProvider
>@@ -296,22 +305,34 @@ namespace Mono.UIAutomation.Winforms
> 	{
> #region Public Properties
> 		public string Name {
>-			get { return entry.Label; }
>+			get {
>+				return Helper.SynchronizedGet<PropertyGridView, string> (
>+					view, v => { return entry.Label; });
>+			}
> 		}
> 
> 		public string Value {
>-			get { return entry.ValueText; }
>+			get {
>+				return Helper.SynchronizedGet<PropertyGridView, string> (
>+					view, v => { return entry.ValueText; });
>+			}
> 			set {
>-				string error;
>-				if (!entry.SetValue (value, out error)) {
>-					Log.Warn ("PropertyGridListItemProvider: Unable to set value: {0}",
>-					          error);
>-				}
>+				Helper.SynchronizedSet (view, delegate {
>+					string error;
>+					if (!entry.SetValue (value, out error)) {
>+						Log.Warn ("PropertyGridListItemProvider: Unable to set value: {0}",
>+							  error);
>+					}
>+				});
> 			}
> 		}
> 
> 		public bool IsReadOnly {
>-			get { return entry.IsReadOnly && entry.IsEditable; }
>+			get {
>+				return Helper.SynchronizedGet<PropertyGridView, bool> (
>+					view, v => { return entry.IsReadOnly && entry.IsEditable; }
>+				);
>+			}
> 		}
> 
> 		public PropertyGridView PropertyGridView {
>@@ -432,9 +453,8 @@ namespace Mono.UIAutomation.Winforms
> 		// TODO: Replace this with an internal property
> 		private int RowHeight {
> 			get {
>-				return Helper.GetPrivateField<int> (
>-					typeof (PropertyGridView), view,
>-					"row_height"
>+				return Helper.SynchronizedGet<PropertyGridView, int> (view,
>+					v => Helper.GetPrivateField<int> (typeof (PropertyGridView), v, "row_height")
> 				);
> 			}
> 		}
>@@ -442,8 +462,8 @@ namespace Mono.UIAutomation.Winforms
> 		// TODO: Replace this with an internal property
> 		private ScrollBar VerticalScrollBar {
> 			get {
>-				return Helper.GetPrivateField<ScrollBar> (
>-					typeof (PropertyGridView), view, "vbar"
>+				return Helper.SynchronizedGet<PropertyGridView, ScrollBar> (view,
>+					v => Helper.GetPrivateField<ScrollBar> (typeof (PropertyGridView), v, "vbar")
> 				);
> 			}
> 		}
>@@ -451,8 +471,8 @@ namespace Mono.UIAutomation.Winforms
> 		// TODO: Replace this with an internal property
> 		private int SplitterLocation {
> 			get {
>-				return Helper.GetPrivateProperty<PropertyGridView, int> (
>-					view, "SplitterLocation"
>+				return Helper.SynchronizedGet<PropertyGridView, int> (view,
>+					v => Helper.GetPrivateProperty<PropertyGridView, int> (v, "SplitterLocation")
> 				);
> 			}
> 		}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ScrollBehaviorObserver.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ScrollBehaviorObserver.cs
>index 6fffaf0..643b1ed 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ScrollBehaviorObserver.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ScrollBehaviorObserver.cs
>@@ -58,14 +58,14 @@ namespace Mono.UIAutomation.Winforms
> 		public bool HasHorizontalScrollbar {
> 			get {
> 				return HorizontalScrollBar != null 
>-					&& HorizontalScrollBar.Visible && HorizontalScrollBar.Enabled; 
>+					&& HorizontalScrollBar.InvokeSync (c => c.Visible && c.Enabled); 
> 			}
> 		}
> 		
> 		public bool HasVerticalScrollbar {
> 			get { 
> 				return VerticalScrollBar != null 
>-					&& VerticalScrollBar.Visible && VerticalScrollBar.Enabled; 
>+					&& VerticalScrollBar.InvokeSync (c => c.Visible && c.Enabled); 
> 			}
> 		}
> 	
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ScrollableControlProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ScrollableControlProvider.cs
>index 88aa659..885e38d 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ScrollableControlProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ScrollableControlProvider.cs
>@@ -59,18 +59,20 @@ namespace Mono.UIAutomation.Winforms
> 
> #region FragmentRootControlProvider Implementation
> 		public override Component Container {
>-			get { return Control.Parent; }
>+			get { return Control.InvokeSync (c => c.Parent); }
> 		}
> 
> 		public override void InitializeChildControlStructure ()
> 		{
> 			base.InitializeChildControlStructure ();
> 
>-			observer = new ScrollBehaviorObserver (
>-				this, scrollableControl.hscrollbar,
>-				scrollableControl.vscrollbar);
>-			observer.ScrollPatternSupportChanged += OnScrollPatternSupportChanged;
>-			observer.Initialize ();
>+			scrollableControl.InvokeSync (delegate {
>+				observer = new ScrollBehaviorObserver (
>+					this, scrollableControl.hscrollbar,
>+					scrollableControl.vscrollbar);
>+				observer.ScrollPatternSupportChanged += OnScrollPatternSupportChanged;
>+				observer.Initialize ();
>+			});
> 			UpdateScrollBehavior ();
> 		}
> 
>@@ -78,7 +80,7 @@ namespace Mono.UIAutomation.Winforms
> 		{
> 			// Override Pane's IsKeyboardFocusableProperty
> 			if (propertyId == AutomationElementIdentifiers.IsKeyboardFocusableProperty.Id)
>-				return Control.CanFocus && Control.CanSelect;
>+				return Control.InvokeSync (c => c.CanFocus && c.CanSelect);
> 
> 			return base.GetProviderPropertyValue (propertyId);
> 		}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/SimpleControlProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/SimpleControlProvider.cs
>index f3e52bd..31596f5 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/SimpleControlProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/SimpleControlProvider.cs
>@@ -76,7 +76,7 @@ namespace Mono.UIAutomation.Winforms
> 		#region Public Properties
> 		
> 		public virtual Component Container {
>-			get { return control != null ? control.Parent : null; }
>+			get { return control != null ? control.InvokeSync (c => c.Parent) : null; }
> 		}
> 
> 		public Component Component {
>@@ -209,12 +209,15 @@ namespace Mono.UIAutomation.Winforms
> 		protected virtual System.Drawing.Rectangle ScreenBounds
> 		{
> 			get {
>-				if (Control == null || !Control.Visible)
>+				if (Control == null)
> 					return System.Drawing.Rectangle.Empty;
> 
>-				return Helper.RectToRectangle (
>-					Helper.GetControlScreenBounds (Control.Bounds, Control)
>-				);
>+				return Control.InvokeSync (c => {
>+					if (!c.Visible)
>+						return System.Drawing.Rectangle.Empty;
>+
>+					return Helper.RectToRectangle (Helper.GetControlScreenBounds (c.Bounds, c));
>+				});
> 			}
> 		}
> 
>@@ -281,7 +284,7 @@ namespace Mono.UIAutomation.Winforms
> 			if (Control == null)
> 				return null;
> 			else if (propertyId == AutomationElementIdentifiers.IsEnabledProperty.Id)
>-				return Control.Enabled;
>+				return Control.InvokeSync (c => c.Enabled);
> 			else if (propertyId == AutomationElementIdentifiers.NameProperty.Id) {
> 				if (!string.IsNullOrEmpty (Control.AccessibleName)) 
> 					return Control.AccessibleName;
>@@ -296,7 +299,7 @@ namespace Mono.UIAutomation.Winforms
> 					if (controlType == ControlType.Edit.Id || controlType == ControlType.Document.Id)
> 						return string.Empty;
> 					else
>-						return Helper.StripAmpersands (Control.Text);
>+						return Helper.StripAmpersands (Control.InvokeSync (c => c.Text));
> 				} else
> 					return label.GetPropertyValue (AutomationElementIdentifiers.NameProperty.Id);
> 			} else if (propertyId == AutomationElementIdentifiers.LabeledByProperty.Id) {
>@@ -326,9 +329,9 @@ namespace Mono.UIAutomation.Winforms
> 				return closestLabel;
> 				
> 			} else if (propertyId == AutomationElementIdentifiers.IsKeyboardFocusableProperty.Id)
>-				return Control.CanFocus && Control.CanSelect;
>+				return Control.InvokeSync (c => c.CanFocus && c.CanSelect);
> 			else if (propertyId == AutomationElementIdentifiers.HasKeyboardFocusProperty.Id)
>-				return Control.Focused;
>+				return Control.InvokeSync (c => c.Focused);
> 			else if (propertyId == AutomationElementIdentifiers.ClickablePointProperty.Id)
> 				return Helper.GetClickablePoint (this);
> 			else if (propertyId == AutomationElementIdentifiers.HelpTextProperty.Id) {
>@@ -337,11 +340,12 @@ namespace Mono.UIAutomation.Winforms
> 				else
> 					return ToolTip.GetToolTip (Control);
> 			} else if (propertyId == AutomationElementIdentifiers.AccessKeyProperty.Id) {
>-				if (!Control.Text.Contains ("&"))
>+				string text = Control.InvokeSync (c => c.Text);
>+				if (!text.Contains ("&"))
> 					return null;
> 				else {
>-					int index = Control.Text.LastIndexOf ('&') + 1;
>-					return "Alt+" + Control.Text.Substring (index, 1);
>+					int index = text.LastIndexOf ('&') + 1;
>+					return "Alt+" + text.Substring (index, 1);
> 				}
> 			} else
> 				return null;
>@@ -390,10 +394,10 @@ namespace Mono.UIAutomation.Winforms
> 		public virtual IRawElementProviderSimple HostRawElementProvider {
> 			get {
> 				// TODO: Address for Components (*Strip*)
>-				if (Control == null || Control.TopLevelControl == null)
>+				if (Control == null || Control.InvokeSync (c => c.TopLevelControl == null))
> 					return null;
> 				else
>-					return AutomationInteropProvider.HostProviderFromHandle (Control.TopLevelControl.Handle);
>+					return AutomationInteropProvider.HostProviderFromHandle (Control.InvokeSync (c => c.TopLevelControl.Handle));
> 			}
> 		}
> 		
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/SplitContainerProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/SplitContainerProvider.cs
>index 3b8027a..5f17ad5 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/SplitContainerProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/SplitContainerProvider.cs
>@@ -95,9 +95,12 @@ namespace Mono.UIAutomation.Winforms
> 				return ControlType.Pane.Id;
> 			else if (propertyId == AutomationElementIdentifiers.LocalizedControlTypeProperty.Id)
> 				return Catalog.GetString ("pane");
>-				else if (propertyId == AutomationElementIdentifiers.OrientationProperty.Id)
>-					return ((SplitContainer)Control).Orientation == Orientation.Vertical? OrientationType.Vertical: OrientationType.Horizontal;
>-			else
>+			else if (propertyId == AutomationElementIdentifiers.OrientationProperty.Id) {
>+				if (((SplitContainer)Control).InvokeSync (c => c.Orientation) == Orientation.Vertical)
>+					return OrientationType.Vertical;
>+				else
>+					return OrientationType.Horizontal;
>+			} else
> 				return base.GetProviderPropertyValue (propertyId);
> 		}
> 		
>@@ -148,7 +151,7 @@ namespace Mono.UIAutomation.Winforms
> 				if (propertyId == AutomationElementIdentifiers.ControlTypeProperty.Id)
> 					return ControlType.Pane.Id;
> 				else if (propertyId == AutomationElementIdentifiers.LocalizedControlTypeProperty.Id)
>-					return "pane";
>+					return Catalog.GetString ("pane");
> 				else if (propertyId == AutomationElementIdentifiers.IsKeyboardFocusableProperty.Id)
> 					return false;
> 				else
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/StatusBarProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/StatusBarProvider.cs
>index e6c1f91..2bfe548 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/StatusBarProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/StatusBarProvider.cs
>@@ -112,19 +112,21 @@ namespace Mono.UIAutomation.Winforms
> 		
> 		public StatusBarPanelProvider GetPanelProvider (int index)
> 		{
>-			StatusBarPanelProvider panel = null;
>-			
>-			if (index < 0 || index >= statusBar.Panels.Count)
>-				return null;
>-			else if (index >= panels.Count) {
>-				for (int loop = panels.Count - 1; loop < index; ++loop) {
>-					panel = new StatusBarPanelProvider (statusBar.Panels [index]);
>-					panels.Add (panel);
>-					panel.Initialize ();
>+			return statusBar.InvokeSync (p => {
>+				StatusBarPanelProvider panel = null;
>+				
>+				if (index < 0 || index >= p.Panels.Count)
>+					return null;
>+				else if (index >= panels.Count) {
>+					for (int loop = panels.Count - 1; loop < index; ++loop) {
>+						panel = new StatusBarPanelProvider (p.Panels [index]);
>+						panels.Add (panel);
>+						panel.Initialize ();
>+					}
> 				}
>-			}
>+				return panels [index];
>+			});
> 			
>-			return panels [index];
> 		}
> 		
> 		public StatusBarPanelProvider RemovePanelAt (int index)
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TabControlProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TabControlProvider.cs
>index 86d8b94..b04d52e 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TabControlProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TabControlProvider.cs
>@@ -17,7 +17,7 @@
> // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 
> // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 
> // 
>-// Copyright (c) 2008 Novell, Inc. (http://www.novell.com) 
>+// Copyright (c) 2008,2009 Novell, Inc. (http://www.novell.com) 
> // 
> // Authors: 
> //	Brad Taylor <brad@getcoded.net>
>@@ -65,9 +65,11 @@ namespace Mono.UIAutomation.Winforms
> 				return ControlType.Tab.Id;
> 			else if (propertyId == AEIds.LocalizedControlTypeProperty.Id)
> 				return Catalog.GetString ("tab");
>-			else if (propertyId == AEIds.OrientationProperty.Id)
>-				return (control.Alignment == TabAlignment.Top || control.Alignment == TabAlignment.Bottom)
>+			else if (propertyId == AEIds.OrientationProperty.Id) {
>+				TabAlignment align = control.InvokeSync (c => c.Alignment);
>+				return (align == TabAlignment.Top || align == TabAlignment.Bottom)
> 				       ? Orientation.Horizontal : Orientation.Vertical;
>+			}
> 
> 			return base.GetProviderPropertyValue (propertyId);
> 		}
>@@ -83,27 +85,29 @@ namespace Mono.UIAutomation.Winforms
> #endregion
> 
> 		internal bool HasSelection {
>-			get { return (control.SelectedIndex > -1); }
>+			get { return control.InvokeSync (c => c.SelectedIndex > -1); }
> 		}
> 
> 		internal TabPageProvider GetSelectedTab ()
> 		{
>-			if (control.SelectedTab == null) {
>+			TabPage page = control.InvokeSync (c => c.SelectedTab);
>+
>+			if (page == null)
> 				return null;
>-			}
> 
>-			return (TabPageProvider) ProviderFactory.GetProvider (
>-				control.SelectedTab);
>+			return (TabPageProvider) ProviderFactory.GetProvider (page);
> 		}
> 
> 		internal void SelectItem (TabPageProvider tabPage)
> 		{
>-			control.SelectedTab = (TabPage) tabPage.Control;
>+			control.InvokeSync (delegate {
>+				control.SelectedTab = (TabPage) tabPage.Control;
>+			});
> 		}
> 
> 		internal bool IsItemSelected (TabPageProvider tabPage)
> 		{
>-			return (control.SelectedTab == (TabPage) tabPage.Control);
>+			return control.InvokeSync (c => c.SelectedTab == (TabPage) tabPage.Control);
> 		}
> 		
> #region Private Fields
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TabPageProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TabPageProvider.cs
>index 83bc6dd..b1822b3 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TabPageProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TabPageProvider.cs
>@@ -17,7 +17,7 @@
> // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 
> // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 
> // 
>-// Copyright (c) 2008 Novell, Inc. (http://www.novell.com) 
>+// Copyright (c) 2008,2009 Novell, Inc. (http://www.novell.com) 
> // 
> // Authors: 
> //	Brad Taylor <brad@getcoded.net>
>@@ -41,9 +41,8 @@ namespace Mono.UIAutomation.Winforms
> 		{
> 			this.tabPage = control;
> 
>-			selectionBehavior = new SelectionItemProviderBehavior (this);
> 			SetBehavior (SelectionItemPatternIdentifiers.Pattern,
>-			             selectionBehavior);
>+				     new SelectionItemProviderBehavior (this));
> 		}
> 		
> 		protected override object GetProviderPropertyValue (int propertyId)
>@@ -57,8 +56,8 @@ namespace Mono.UIAutomation.Winforms
> 				// want this control's visiblity managed by the
> 				// TabControl, as tab pages are on-screen even
> 				// if they report Visible = false.
>-				return Helper.RectangleToRect (
>-					Control.Parent.RectangleToScreen (tabPage.TabBounds));
>+				return Control.InvokeSync (v => Helper.RectangleToRect (
>+						v.Parent.RectangleToScreen (tabPage.TabBounds)));
> 			}
> 
> 			return base.GetProviderPropertyValue (propertyId);
>@@ -71,7 +70,7 @@ namespace Mono.UIAutomation.Winforms
> 			// seems to keep a TabPages' children visible even if
> 			// the TabPage isn't.  This is to model Vista's
> 			// behavior.
>-			return Control.Visible;
>+			return Control.InvokeSync (c => c.Visible);
> 		}
> 
> 		internal TabControlProvider TabControlProvider {
>@@ -86,15 +85,7 @@ namespace Mono.UIAutomation.Winforms
> 				return TabControlProvider.IsItemSelected (this);
> 			}
> 		}
>-
>-		public override void SetFocus ()
>-		{
>-			//because we want to cause a HasKeyboardFocus property changed event on
>-			//the tab control, not on the tabpage (as this is how this works on UIA+Vista)
>-			selectionBehavior.Select ();
>-		}
> 		
> 		private TabPage tabPage;
>-		private SelectionItemProviderBehavior selectionBehavior;
> 	}
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TextBoxProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TextBoxProvider.cs
>index 71abb8d..003c85c 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TextBoxProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TextBoxProvider.cs
>@@ -85,9 +85,9 @@ namespace Mono.UIAutomation.Winforms
> 		protected override object GetProviderPropertyValue (int propertyId)
> 		{
> 			if (propertyId == AutomationElementIdentifiers.ControlTypeProperty.Id)
>-				return textboxbase.Multiline == true ? ControlType.Document.Id : ControlType.Edit.Id;
>+				return textboxbase.InvokeSync (c => c.Multiline) ? ControlType.Document.Id : ControlType.Edit.Id;
> 			else if (propertyId == AutomationElementIdentifiers.LocalizedControlTypeProperty.Id)
>-				return textboxbase.Multiline == true ? Catalog.GetString ("document")
>+				return textboxbase.InvokeSync (c => c.Multiline) ? Catalog.GetString ("document")
> 				                                     : Catalog.GetString ("edit");
> 			else 
> 				return base.GetProviderPropertyValue (propertyId);
>@@ -159,19 +159,21 @@ namespace Mono.UIAutomation.Winforms
> 		
> 		internal int MaxLength {
> 			get {
>-				if (textboxbase is TextBox) {
>-					return ((TextBox) textboxbase).MaxLength;
>-				} else if (textboxbase is RichTextBox) {
>-					return ((RichTextBox) textboxbase).MaxLength;
>-				} else if (textboxbase is MaskedTextBox) {
>-					// Length of the mask, removing mask modifiers
>-					MaskedTextBox mtb = (MaskedTextBox) textboxbase;
>-					if (mtb.MaskedTextProvider != null)
>-						return mtb.MaskedTextProvider.Length;
>-					else
>-						return mtb.Mask.Length;
>-				}
>-				return 0;
>+				return textboxbase.InvokeSync (c => {
>+					if (textboxbase is TextBox) {
>+						return ((TextBox) c).MaxLength;
>+					} else if (textboxbase is RichTextBox) {
>+						return ((RichTextBox) c).MaxLength;
>+					} else if (textboxbase is MaskedTextBox) {
>+						// Length of the mask, removing mask modifiers
>+						MaskedTextBox mtb = (MaskedTextBox) c;
>+						if (mtb.MaskedTextProvider != null)
>+							return mtb.MaskedTextProvider.Length;
>+						else
>+							return mtb.Mask.Length;
>+					}
>+					return 0;
>+				});
> 			}
> 		}
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolBarProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolBarProvider.cs
>index 35f9c9e..96a9359 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolBarProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolBarProvider.cs
>@@ -107,21 +107,25 @@ namespace Mono.UIAutomation.Winforms
> 		public ToolBarButtonProvider RemoveButtonAt (int index)
> 		{
> 			ToolBarButtonProvider button = null;
>-			
>-			if (index < toolBar.Buttons.Count) {
>-				button = (ToolBarButtonProvider)
>-					ProviderFactory.GetProvider (toolBar.Buttons [index]);
>-				ProviderFactory.ReleaseProvider (toolBar.Buttons [index]);
>-			}
>-			
>-			return button;
>+
>+			return toolBar.InvokeSync (t => {
>+				if (index < t.Buttons.Count) {
>+					button = (ToolBarButtonProvider)
>+						ProviderFactory.GetProvider (t.Buttons [index]);
>+					ProviderFactory.ReleaseProvider (t.Buttons [index]);
>+				}
>+				
>+				return button;
>+			});
> 		}
> 		
> 		public void ClearButtonsCollection ()
> 		{
>-			while (toolBar.Buttons.Count > 0) {
>-				RemoveButtonAt (toolBar.Buttons.Count - 1);
>-			}
>+			toolBar.InvokeSync (delegate {
>+				while (toolBar.Buttons.Count > 0) {
>+					RemoveButtonAt (toolBar.Buttons.Count - 1);
>+				}
>+			});
> 		}
> 		
> 		#endregion
>@@ -134,7 +138,7 @@ namespace Mono.UIAutomation.Winforms
> 		{
> 			if (e.Action == CollectionChangeAction.Add) {
> 				ToolBarButtonProvider button = (ToolBarButtonProvider)
>-					ProviderFactory.GetProvider (toolBar.Buttons [(int) e.Element]);
>+					ProviderFactory.GetProvider (toolBar.InvokeSync (c => c.Buttons [(int) e.Element]));
> 				AddChildProvider (button);
> 			} else if (e.Action == CollectionChangeAction.Remove) {
> 				ToolBarButtonProvider button = RemoveButtonAt ((int) e.Element);
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripButtonProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripButtonProvider.cs
>index e2c66aa..32df626 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripButtonProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripButtonProvider.cs
>@@ -55,11 +55,13 @@ namespace Mono.UIAutomation.Winforms
> 
> 		protected override object GetProviderPropertyValue (int propertyId)
> 		{
>+			bool checkOnClick = Owner.InvokeSync (t => button.CheckOnClick);
>+
> 			if (propertyId == AEIds.ControlTypeProperty.Id)
>-				return button.CheckOnClick ? ControlType.CheckBox.Id : ControlType.Button.Id;
>+				return checkOnClick ? ControlType.CheckBox.Id : ControlType.Button.Id;
> 			else if (propertyId == AEIds.LocalizedControlTypeProperty.Id)
>-				return button.CheckOnClick ? Catalog.GetString ("checkbox")
>-				                           : Catalog.GetString ("button");
>+				return checkOnClick ? Catalog.GetString ("checkbox")
>+				                    : Catalog.GetString ("button");
> 			else if (propertyId == AEIds.LabeledByProperty.Id)
> 				return null;
> 			else
>@@ -90,6 +92,12 @@ namespace Mono.UIAutomation.Winforms
> #region Private Fields
> 		private ToolStripButton button;
> #endregion
>+
>+#region Private Properties
>+		private ToolStrip Owner {
>+			get { return ((ToolStripItem) Component).Owner; }
>+		}
>+#endregion
> 	}
> 
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripItemProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripItemProvider.cs
>index dc7dd1c..0f36221 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripItemProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripItemProvider.cs
>@@ -107,7 +107,10 @@ namespace Mono.UIAutomation.Winforms
> 
> 		public override void SetFocus ()
> 		{
>-			item.Select ();
>+			if (item.Owner != null)
>+				item.Owner.InvokeSync (delegate { item.Select (); });
>+			else
>+				item.Select ();
> 		}
> 
> 	}
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripLabelProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripLabelProvider.cs
>index ac45341..a8ecc01 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripLabelProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripLabelProvider.cs
>@@ -84,11 +84,13 @@ namespace Mono.UIAutomation.Winforms
> 
> 		protected override object GetProviderPropertyValue (int propertyId)
> 		{
>+			bool isLink = label.IsLink;
>+
> 			if (propertyId == AEIds.ControlTypeProperty.Id)
>-				return label.IsLink ? ControlType.Hyperlink.Id : ControlType.Text.Id;
>+				return isLink ? ControlType.Hyperlink.Id : ControlType.Text.Id;
> 			else if (propertyId == AEIds.LocalizedControlTypeProperty.Id)
>-				return label.IsLink ? Catalog.GetString ("hyperlink")
>-				                    : Catalog.GetString ("text");
>+				return isLink ? Catalog.GetString ("hyperlink")
>+				              : Catalog.GetString ("text");
> 			else
> 				return base.GetProviderPropertyValue (propertyId);
> 		}
>@@ -97,7 +99,9 @@ namespace Mono.UIAutomation.Winforms
> 		
> 		private void OnIsLinkChanged (object sender, EventArgs args)
> 		{
>-			if (label.IsLink) {
>+			bool isLink = label.IsLink;
>+
>+			if (isLink) {
> 				SetBehavior (InvokePatternIdentifiers.Pattern,
> 				             new InvokeProviderBehavior (this));
> 				SetEvent (ProviderEventType.TextPatternTextChangedEvent,
>@@ -111,5 +115,6 @@ namespace Mono.UIAutomation.Winforms
> 		}
> 
> 		#pragma warning restore 169
>+
> 	}
> }
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripProvider.cs
>index 04a3060..d266f12 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolStripProvider.cs
>@@ -59,7 +59,7 @@ namespace Mono.UIAutomation.Winforms
> 			else if (propertyId == AEIds.LabeledByProperty.Id)
> 				return null;
> 			else if (propertyId == AEIds.NameProperty.Id)
>-				return Helper.StripAmpersands (strip.Text);
>+				return Helper.StripAmpersands (strip.InvokeSync (s => s.Text));
> 			else if (propertyId == AEIds.IsContentElementProperty.Id)
> 				return true;
> 			else
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolTipBaseProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolTipBaseProvider.cs
>index bedaa21..db27c5b 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolTipBaseProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/ToolTipBaseProvider.cs
>@@ -103,6 +103,8 @@ namespace Mono.UIAutomation.Winforms
> 		{
> 			if (AutomationInteropProvider.ClientsAreListening == true) {					
> 				message = GetTextFromControl (control);
>+
>+//				Helper.DelegateQueue.Get ().Enqueue (delegate {
> 				
> 				//TODO: We need deeper tests in Vista because MS is generating both events
> 				Helper.RaiseStructureChangedEvent (StructureChangeType.ChildAdded,
>@@ -113,6 +115,8 @@ namespace Mono.UIAutomation.Winforms
> 				AutomationInteropProvider.RaiseAutomationEvent (AutomationElementIdentifiers.ToolTipOpenedEvent,
> 				                                                this, 
> 				                                                eventArgs);
>+
>+//				});
> 			}
> 		}
> 		
>@@ -120,6 +124,8 @@ namespace Mono.UIAutomation.Winforms
> 		{
> 			if (AutomationInteropProvider.ClientsAreListening == true) {
> 				message = GetTextFromControl (control);
>+
>+//				Helper.DelegateQueue.Get ().Enqueue (delegate {
> 				
> 				//TODO: We need deeper tests in Vista because MS is generating both events
> 				Helper.RaiseStructureChangedEvent (StructureChangeType.ChildRemoved,
>@@ -130,6 +136,7 @@ namespace Mono.UIAutomation.Winforms
> 				AutomationInteropProvider.RaiseAutomationEvent (AutomationElementIdentifiers.ToolTipClosedEvent,
> 				                                                this, 
> 				                                                eventArgs);
>+//				});
> 			}
> 		}
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TrackBarProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TrackBarProvider.cs
>index 26716f9..697adf9 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TrackBarProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TrackBarProvider.cs
>@@ -84,10 +84,12 @@ namespace Mono.UIAutomation.Winforms
> 				return Catalog.GetString ("slider");
> 			else if (propertyId == AutomationElementIdentifiers.IsContentElementProperty.Id)
> 				return true;
>-			else if (propertyId == AutomationElementIdentifiers.OrientationProperty.Id)
>-				return trackBar.Orientation == Orientation.Horizontal
>-					? OrientationType.Horizontal : OrientationType.Vertical;
>-			else
>+			else if (propertyId == AutomationElementIdentifiers.OrientationProperty.Id) {
>+				if (trackBar.InvokeSync (c => c.Orientation == Orientation.Horizontal))
>+					return OrientationType.Horizontal;
>+				else
>+					return OrientationType.Vertical;
>+			} else
> 				return base.GetProviderPropertyValue (propertyId);
> 		}
> 
>diff --git a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TreeViewProvider.cs b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TreeViewProvider.cs
>index bec3118..28d9b11 100644
>--- a/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TreeViewProvider.cs
>+++ b/UIAutomationWinforms/UIAutomationWinforms/Mono.UIAutomation.Winforms/TreeViewProvider.cs
>@@ -17,7 +17,7 @@
> // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 
> // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 
> // 
>-// Copyright (c) 2008 Novell, Inc. (http://www.novell.com) 
>+// Copyright (c) 2008,2009 Novell, Inc. (http://www.novell.com) 
> // 
> // Authors: 
> //	Sandy Armstrong <sanfordarmstrong@gmail.com>
>diff --git a/UIAutomationWinforms/UIAutomationWinformsTests/FormProviderTest.cs b/UIAutomationWinforms/UIAutomationWinformsTests/FormProviderTest.cs
>index 64d1ff3..b1d8b6f 100644
>--- a/UIAutomationWinforms/UIAutomationWinformsTests/FormProviderTest.cs
>+++ b/UIAutomationWinforms/UIAutomationWinformsTests/FormProviderTest.cs
>@@ -127,11 +127,25 @@ namespace MonoTests.Mono.UIAutomation.Winforms
> 			using (Form f = new Form ()) {
> 				IRawElementProviderFragment provider = (IRawElementProviderFragment) ProviderFactory.GetProvider (f);
> 				IWindowProvider pattern = (IWindowProvider) provider.GetPatternProvider (WindowPatternIdentifiers.Pattern.Id);
>+
>+//				f.Visible = true;
>+//				f.Visible = false;
> 				
> 				Assert.IsFalse (pattern.IsModal, "Form should initialize to not modal");
>+
>+//				ManualResetEvent evnt = new ManualResetEvent (false);
>+//				int reset = 0;
> 				
> 				// Run modal dialog in separate thread
> 				Thread t = new Thread (new ParameterizedThreadStart (delegate {
>+//					f.Shown += delegate (object sender, EventArgs args) {
>+//						Console.WriteLine ("showiiing");
>+//						if (Interlocked.CompareExchange (ref reset, 0, 1) == 0) {
>+//							Console.WriteLine ("was 0!!!");
>+//							f.Close ();
>+//							evnt.Set ();
>+//						}
>+//					};
> 					f.ShowDialog ();
> 				}));
> 				t.Start ();
>@@ -141,6 +155,7 @@ namespace MonoTests.Mono.UIAutomation.Winforms
> 				
> 				f.Close ();
> 				t.Join ();
>+//				evnt.WaitOne ();
> 				
> 				f.Show ();
> 				// Wait for form to appear

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Attachments on bug 494034: 285248 | 297972 | 304144 | 304178 | 304488 | 304496 | 308579