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.NET Forum / Windows Forms / WinForm General / December 2004Application does not terminate when clicking on 'X' in titlebar
Hi, when I try to close my application using the 'X' in the Windows titlebar, nothing happens - neither Form.Dispose() is called not the Closing or Closed events are raised. The application just keeps running. If I close the application using Application.Close(), everything works fine. What does the runtime do when hitting the X button? Is there any way to intercept this action? Thanks a lot, Jo Hi Jo, > Hi, > > when I try to close my application using the 'X' in the Windows > titlebar, nothing happens - neither Form.Dispose() is called not the > Closing or Closed events are raised. The application just keeps > running. That's very unusual ... > If I close the application using Application.Close(), everything > works fine. > What does the runtime do when hitting the X button? Is there any way > to intercept this action? Usually, "Application.Close()" is called. Your App should terminate. Is there anything else you might have changed? I never had that behaviour in any application ...  SignatureFrank Eller www.frankeller.de "Jo Siffert" <jo.siffert@gmx.net> schrieb: > when I try to close my application using the 'X' in the Windows titlebar, > nothing happens - neither Form.Dispose() is called not the Closing or > Closed events are raised. The application just keeps running. Maybe this bug: Windows Forms Bug <URL:http://www.jelovic.com/weblog/e41.htm> SignatureHerfried K. Wagner [MVP] <URL:http://dotnet.mvps.org/ It is indeed this bug. I figured out which controls are in the unvalidatedControls collection and forced those to be removed by calling OnControlRemoved(...) - now the form closes properly. Thanks a lot for this hint! I am wondering why the problem still exists on .NET 1.1 SP1... /Jo > "Jo Siffert" <jo.siffert@gmx.net> schrieb: > [quoted text clipped - 6 lines] > Windows Forms Bug > <URL:http://www.jelovic.com/weblog/e41.htm
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