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Editorial Team
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Asked: 2026-05-13T23:22:11+00:00

I thought that calling BeginInvoke more than once on the same delegate instance would

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I thought that calling BeginInvoke more than once on the same delegate instance would cause problems, but I tried it out and it works. Why is that?

Is the IAsyncResult object returned with each BeginInvoke called unique instead of each instance of the delegate?

In other words, do I only need one instance of the delegate to spawn multiple calls to its function?

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1 Answer

  1. Editorial Team

    Each call to BeginInvoke triggers a new request onto the .net thread pool.

    It is perfectly acceptable to call BeginInvoke multiple times. Each IAsyncResult object is unique to that specific call to BeginInvoke.

    Just be careful to make sure that you make a matching call to EndInvoke for every BeginInvoke call you make to make sure the resources are cleaned up.

    (Note that each call does not necessarily equate to a thread. BeginInvoke passes the requests to the thread pool, which may queue up the requests if all of the threads in the pool are already in use)

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