Can't close my application 2

[colinb]

I have written a small VB.NET application that accesses an mdb database and then dynamically creates controls based upon it's values. A timer runs and refreshes the screen every so often by clearing the current controls and recreating them.
When I run it, unless I close it soon afterwards, it will not close (with X, or alt|F4 etc). The only course of action is to use task manager.
Has anyone got any ideas as to what is causing it as it is driving me mad!

 

[DotNetDoc]

What is the code that you have in the timer?


DotNetDoc
M.C.S.D.

http://www.DotNetDoc.com

---------------------------------------

Tell me and I forget. Show me and I remember. Involve me and I understand.
- Anonymous Chinese Proverb
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If you can't explain it simply, you don't understand it well enough.
- A. Einstein

 

[RebeccaLynn]

I am not sure why it does this, but I do have a work around solution that works for me.

Private Sub form_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
e.Cancel = True
Timer1.Enabled = False
Application.Exit()
End Sub

Becca

Somtimes, the easy answer is the hardest to find.

Still under construction ...

http://webpages.charter.net/rlmsoft

 

[RebeccaLynn]

Opps, I forgot some code ...

Private Sub form_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
If Timer1.Enabled = True Then
e.Cancel = True
Timer1.Enabled = False
Application.Exit()
End IF
End Sub

Becca

Becca

Somtimes, the easy answer is the hardest to find.

Still under construction ...

http://webpages.charter.net/rlmsoft

 

[colinb]

Code for DotNetDoc:

Private Sub Timer1_Tick(...)
sec += 1
Call SetDateAndTimeDisplay() 'this shows the current date
'and time on the form
If sec >= REFRESH_INTERVAL Then
sec = 0
Call ClearControls() 'clears the txt and cbo boxes
Call RefreshData() 'requeries the database
Call FillActivityArray() 'Fills an array with a
'list of activities from the
'database
Call DisplayScreenInformation() 're-generates the new
'txt and cbo boxes
End If
End Sub

Thankyou both for your swift replies.
I shall try Rebecca's suggestion tomorrow (if i'm allowed on the computer on Xmas day!)

 

[SHelton]

I believe this is a known issue with .NET, and caught me out on one of my previous projects.

I had the same problem - the application wouldn't close either by clicking the close button, firing the main form close event or by using ALT+F4.

I traced it to the fact that if a control has focus when it is removed from a collection, it prevents the form from closing, and thus the application from exiting. I got round it by moving focus away from the controls being removed before removing them.

I have since seen a number of newsgroup posts with similair problems and solutions, so yours may fall into this category.