Finally != Inevitable
142 words.
For future reference: I had always heard that there were cases where finally blocks were not run. The other day I actually witnessed one of those situations: In a .NET console app, if you hit CTRL-C to exit the application, finally blocks are not executed. Fortunately garbage collection will still handle standard cleanup of objects for you (at least I assume so). But if you need to do something special you have to use the System.Console.CancelKeyPress event, like so:
System.Console.CancelKeyPress += delegate { Cleanup(); };
Be careful because it runs in a separate thread — the main thread is not interrupted and won’t actually stop until the CancelKeyPress handler returns.
Unfortunately, I found no way to handle the situation where the user clicks the close button (the red X) on the console window. It skips both CancelKeyPress and all the finally blocks.
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