G.Day
I want to know how in VB we can limit  the Application to a single instance,no matter how many times the user click there should be only one instance executing
Thanks

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Hi ahmad,
Just set your Project to run "Sub Main()" as startup. Then the first line of code can be :-

If App.PrevInstance Then MsgBox "Program already open", vbInformation End End If

That will do the trick.



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multi-tasking - the ability to hang more than one app. at the same time.

put this code in your Sub Main

Public Sub Main()     If App.PrevInstance Then         'stop execution since another instance of the application is         'already running         End     Else         'run your interface form         frmMain.show     End If End Sub

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AndreaVB

Thanks Guys,it has worked very well


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