Associate a CancellationToken with an async method's Task

Question

Question: Is there a way to associate a CancellationToken with the Task returned from an async method?

Generally,

Answer 1

I think the design works well for the common case: if any child operations are cancelled, then the cancellation propagates to the parent (the most common case is that the parent and child share cancellation tokens).

If you want different semantics, you can catch the OperationCanceledException in your async method and throw an exception that fits the semantics you need. If you want to use these semantics repeatedly, an extension method for Task should fit the bill.