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Alex Rivera
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Today I had to fix some older VB.NET 1.0 code which is using threads. The problem was with updating UI elements from the worker thread instead of the UI-thread. It took me some time to find out that I can use assertions with InvokeRequired to find the problem. Besides the above mentioned concurrent modification problem, there are deadlocks, race conditions, etc. one could run into. As debugging/fixing threading problems is a pain, I'm wondering how I could reduce coding errors/faults in this area and how I could easier find any of them. So, what I'm asking for, is: Are there any good patterns to follow when writing multi-threading code? What are the Dos and Don'ts? What techniques do you use to debug threading problems? Please provide some example code if applicable and possible. The answers should be related to the .NET framework (any version).
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