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Created attachment 1288 [details]
Sample code that illustrates the problem
Description of Problem:
When DataGridView row is selected it send following StateChanged (printed using : Console.WriteLine("State: " + e.StateChanged)):
State: Selected, Visible
State: Displayed, Selected, Visible
Whereas .NET Framework reports every state independently. As a result this condition doesn't work:
if (e.StateChanged == DataGridViewElementStates.Selected)
Steps to reproduce the problem:
1. Launch sample application.
2. Click "Fill" button few times.
3. Select any row.
MessageBox should appear.
How often does this happen?
Mono's StateChange handling isn't compatible with .NET Frameworks.