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How to delete the current application ?

Posted on 2001-08-29
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Last Modified: 2008-02-01
How do we write code in Visual Basic that deletes the current application *.exe right after it's finished executing ?

My application is an installer that needs to clean itself right after it has done its job.
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Question by:VBQuebec
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Ark earned 25 total points
ID: 6439092
Hi

Private Sub Kill_Me()
    '-----------make bat-File---------------
    Open App.Path + "\Delself.bat" For Append As #1
    Print #1, "@echo off"
    Print #1, ":try"
    Print #1, "del " + App.EXEName + ".exe"
    Print #1, "if exist " + App.EXEName + ".exe goto try"
    Print #1, "del " + App.Path + "\Delself.bat"
    Close #1
    '--------------------------------
    Shell App.Path + "\Delself.bat", vbHide
End Sub

'Add call to above function at form_unload event or from Sub Main if you don't have form:


Private Sub Form_Unload(Cancel As Integer)
   Kill_Me
End Sub

Cheers


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LVL 50

Expert Comment

by:Ryan Chong
ID: 6439100
<listening..>
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LVL 38

Expert Comment

by:PaulHews
ID: 6439193
Hehe.  Cool one Ark.
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LVL 27

Expert Comment

by:Ark
ID: 6439224
Back to old DOS times :)
Just to explain:
The trick is that VB Shell and DOS bat executes asynchroneously. Basically, you can call Kill_Me even at Form_Load event and while your code will execute bat file will continue loop <<try: - goto try>> generating error "access denied" and only after your app finished it delete your app and itself.

Cheers
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Expert Comment

by:DrVannacult
ID: 6439442
brain's power!
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LVL 11

Expert Comment

by:Otana
ID: 6439504
cool one. is there a limit to the number of loops the .bat can go through?
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LVL 27

Expert Comment

by:Ark
ID: 6440032
Forever :)
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Author Comment

by:VBQuebec
ID: 6445664
I only had to modify the line
Print #1, "del " + App.Path + "\Delself.bat"
for this line
Print #1, "del Delself.bat"

But actually, your code is Excellent :o)
It surely helps to have that DOS days background for those silly but helpful batch files.
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LVL 27

Expert Comment

by:Ark
ID: 6446917
>>your code is Excellent<< = "B"???
What is "A" in this case???
Anyway, thanks for points, glad I could help you
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