I am trying to learn ValidationWalkthrough. When I double click on Quantinity column the following error occurs:
Failed to add validation event handler because of the following error:
Invalid Index. (Exception from HRESULT: 0x8002000B (DISP_E_BADINDEX))
The system is:
Microsoft Visual Studio 2005 Version 8.0.50727.42 (RTM.050727-4200) Microsoft .NET Framework Version 2.0.50727
Installed Edition: C# Express Microsoft Visual C# 2005 76544-000-0000011-00126
What I am doing wrong
Marek

Failed to add validation event handler
Fabrice MARGUERIE
I am trying to do the same thing & having the same problem. I found this other thread which discusses the issue:
http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=206596&SiteID=1
It seems to be a bug in Visual C# 2005 Express Edition. They say it's not present in the full version of Visual Studio...
Terence Chua
Thank you for the help,
Marek