Check If Bool Variable = True Before Allowing Form Close

[IndigoMontoya]

This is C# winforms.


I am running a behind the scenes event that is completely hidden to the user, and when it completes I set bool allDone = true;

I am needing a way that when the user clicks the X to close the forecheck if allDone = true; if it does not, then display a message to the user that "Still processing", and have the form auto-check this value every 30 seconds on it's own w/o the user having to click the X again.


How would I Do this?

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