Don't propagate exceptions to the user
Catch every exception in your application. If you must, show the user some kind of an error dialog, but don't force him/her to watch the awful .Net exception dialog. I have seen to many application with various try...catch blocks, but with nothing done
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Read the complete post at http://feeds.feedburner.com/~r/dotmad/~3/141357879/dont-propagate-exceptions-to-user.html