Question
Why do i get the error message "system.invalidoperationexception: it is invalid to show a modal dialog or form when the application is not running in userinteractive mode. Specify the servicenotification or defaultdesktoponly style to display a ...."?
Answers
You can't use MsgBox or MessageBox.Show in ASP.NET WebForm. You maybe use:
VB.NET
Response.Write("<script>alert('Hello');</script>")
C#
Response.Write("<script>alert('Hello');</script>") ;   Your Comment




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