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I am trying to add validation logic into my application.
I have tried to follow this tutorial
http://www.a2zdotnet.com/View.aspx?id=75
but I do not have any
partial void OnEmailIdChanging(string value)
or any “changing” functions.
in my class, so I get an error from Visual Studio. It seems that VS did not generate enough code when I have created the dbml file…
Any ideas ?
Thank you!
I have found the solution. I was because I did not set correctly a primary key on the table !