Bug 321974 (MONO79265)

---- Reported by eetasoft@online.ee 2006-09-03 09:27:49 MST ----

Description of Problem:

Running exe file using DataGridView in Windows XP using Mono 1.1.17.1 is 
extremely slow. 

Steps to reproduce the problem:

1. Download and unpack http://eetasoft.ee/datagridviewnotworking.zip
Run PostgreSQL with some database containig big table.

2. Replace line in form1.designer.cs with you connection string:
this.npgsqlConnection1.ConnectionString 
= "SERVER=localhost;DATABASE=eetasoft;USER 
ID=admin;PASSWORD=a;ENCODING=UNICODE;";

3. Replace the line in Form1.cs with select witch returns a lot of rows:

this.npgsqlCommand1.CommandText = "select * FROM firma1.klient order by 1";

4. Build exe file with VCS and run it under MONO 1.1.17.1 under Windows XP

Actual Results:

Windows Task Manager shows that mono.exe uses 99% CPU if application has 
focus.
Grid responds to keystrokes after very long delay so that editing data is 
impossible.

Expected Results:

CPU usage should be 0. Application must respond to keystrokes immediately.

How often does this happen? 

Always.

Additional Information:

If this sample is changed to use DataGrid (only 2 lines need to be 
changed), all is OK.



---- Additional Comments From eetasoft@online.ee 2006-09-03 09:52:36 MST ----

Created an attachment (id=170404)
VCS solution to reproduce the bug




---- Additional Comments From jackson@ximian.com 2006-09-05 11:22:44 MST ----

Changing to the 2.0 milestone, since the datagridview is a 2.0 control.



---- Additional Comments From pedromj@gmail.com 2006-11-04 11:58:24 MST ----

Please, make a sample without database that shows the bug. For example
you can use XML/DataSet to feed the DataGridView.



---- Additional Comments From kobruleht2@hot.ee 2007-04-30 12:56:29 MST ----

Here is code to reproduce the issue.

using System.Windows.Forms;
using System.Data;
using System;
using System.IO;

static class Program {
  static void Main() {
      Application.Run(new Frm());
  }
}

class Frm : Form {
  public Frm() {

    System.Data.DataSet dataSet1 = new DataSet();

       StringReader strReader = new StringReader(@"<?xml 
version=""1.0"" standalone=""yes""?>
<NewDataSet>
  <Table>
    <kood>1           </kood>
    <nimi>Firma ise, 1. 
arveldusarve                                                      
</nimi>
  </Table>
</NewDataSet>
");
    
       dataSet1.ReadXml(strReader);
    DataGridView dataGrid1 = new DataGridView();
    Controls.Add(dataGrid1);
    dataGrid1.AutoGenerateColumns = true;
    dataGrid1.DataSource = dataSet1.Tables[0];
  }
}



---- Additional Comments From monkey@jpobst.com 2007-07-31 18:16:16 MST ----

Test case was added by submitter, taking the NEEDINFO flag off.



---- Additional Comments From rolfkvinge@ya.com 2007-08-09 14:07:44 MST ----

Fixed in r83776.

Imported an attachment (id=170404)

Unknown bug field "cf_op_sys_details" encountered while moving bug
   <cf_op_sys_details>XP SP2</cf_op_sys_details>
Unknown operating system unknown. Setting to default OS "Other".