Can I propagate cancellation without throwing task cancelled exceptions?

Question

Currently when I want to indicate an async method was cancelled, I throw a task cancelled exception. An unfortunate side effect of this is it triggers a bunch of functionality in visual studio (debug output, intellitrace event, etc). As a result, I see small hiccups when debugging the project. The same thing happens when an awaited thing is cancelled (a TaskCancelledException is thrown and swallowed immediately by the next level).

Is there a better way to propagate cancellation in async methods?

Answer 1

Hi Strilanc-

The only way to cancel the Task returned from an async method in C#/VB is to throw an OperationCanceledException (or any exception type that derives from it).