How to catch exceptions from a ThreadPool.QueueUserWorkItem?

Question

I have the following code that throws an exception:

ThreadPool.QueueUserWorkItem(state => action());

When the action throws an exception, my program crashes. What is the best practice for handling this situation?

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Related: Exceptions on .Net ThreadPool Threads

Answer 1

You can add try/catch like this:

        ThreadPool.QueueUserWorkItem(state =>
                                         {
                                             try
                                             {
                                                 action();
                                             }
                                             catch (Exception ex)
                                             {
                                                 OnException(ex);
                                             }
                                         });