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VB.net button to stop code running

Posted on 2013-01-15
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Last Modified: 2013-01-15
Hi

I have a VB.net Excel Add-in that populates Excel with data pulled from a SQL database.
This can run into hundreds of thousands of rows so I need the user to be able to stop
it if they want to. What is the best way to do this. Can I use a button with code behind it?

Thanks
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Question by:Murray Brown
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2 Comments
 
LVL 42

Accepted Solution

by:
sedgwick earned 2000 total points
ID: 38778180
you need to have a condition in the code which populates the excel with the data.
assume you have a loop which iterates the DB rows and build the excel sheet.
have a global variable called stopProcessing As Boolean, set it to False
in your button click event set this variable to True
and inside the loop have some kind of condition:

While

If stopProcessing = True Then

'this is for next time you run the population
stopProcessing = False

 Break
End IF

End While

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Author Closing Comment

by:Murray Brown
ID: 38778206
thanks very much
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