VB.NET Application.Exit not closing forms opened using ShowDialog

Question

I have a .Net application with multiple forms invoked using form.ShowDialog(). When I do Application.Exit, the application is not closing all the forms.

When I try to do an explicit Form.Close I am getting an error from WinForms as below

at Microsoft.AGL.Common.MISC.HandleAr(PAL_ERROR ar) at System.Windows.Forms.Form._CloseModal() at System.Windows.Forms.Form.Close() at

Could you show us more code? When are you trying to close the application? — gnarlybracket, Jan 10 '14 at 16:51
I have a thread created which will capture user idle time and if it exceeds a specific value, the application will logoff automatically to inidicate session time out, this will eventually call Application.Exit — user2655903, Jan 10 '14 at 16:57
If you're calling application.exit in another thread I `think` that is your problem. — Bjørn-Roger Kringsjå, Jan 10 '14 at 17:00

score 0 · Answer 1 · edited May 23 '17 at 12:21

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As @CharithJ states in this answer (paraphrased):

Cancel the background worker and send an argument to the BackgroundWorker RunWorkerCompleted event to identify that time has expired. From that event you can call Application.Exit() just fine.

edited May 23 '17 at 12:21

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answered Jan 10 '14 at 17:06

gnarlybracket

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Maybe append a link to the post you've copied? http://stackoverflow.com/a/6866881/1842065 – Bjørn-Roger Kringsjå Jan 10 '14 at 18:16
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@Bjørn-RogerKringsjå Thanks for the correction. You're absolutely right. My bad. – gnarlybracket Jan 10 '14 at 18:23

VB.NET Application.Exit not closing forms opened using ShowDialog

1 Answers1