What's the difference between QueueUserWorkItem() and BeginInvoke(), for performing an asynchronous activity with no return types needed

Question

Following on from my BeginInvoke()/EndInvoke() question, are there major differences in performance/anything else between Delegate.BeginInvoke() and using QueueUserWorkItem(

Answer 1

The EndInvoke() has a useful but rarely mentioned behavior - it rethrows all unhandled exceptions that the delegate generated in the context of the original thread so you can move the exception processing logic into the main code.

Also, if your delegate has out/ref parameters, they will be added to the EndInvoke() signature allowing you to get them when method finishes execution.