Does .NET resume an await continuation on a new different thread pool thread or reuse the thread from a previous resumption?

Question

Does .NET resume an await continuation on a new different thread pool thread or reuse the thread from a previous resumption?

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Answer 1

Does .NET resume an await continuation on a new different thread pool thread or reuse the thread from a previous resumption?

Most of the time it will use the same thread, but this is not guaranteed. This answer to a question where the OP wants to force it to the same thread gives some details.

Where the continuation is run is up to the TaskScheduler. I haven't looked, but I imagine it will run the continuation on the same thread just to avoid unnecessary overhead when working with the thread pool.

Is there any possibility each continuation will resume on a different thread pool thread like below?

Yes, there's a possibility, but probable that you won't see this, again because of the scheduler. You'd probably have to write your own to force a difference, and personally I don't know why you'd do that. (Not saying that was your intent).