Best Practice to always throw OperationCanceledException?

Question

To put a task in the cancelled state the task should always throw an OperationCanceledException when cancelled. Otherwise task continuation will not work, right?

Then why do you find a lot of examples in the internet that just check the IsCancellationRequested flag of the CancellationToken and die a silent death.

Is it Best Practice to always throw an OperationCancelledException or is it legit in some special cases to just check the IsCancellationRequested flag and end the Task without throwing an OperationCancelledException?

Answer 1

I would say that the recommended usage would be to call the ThrowIfCancellationRequested method of the CancellationToken struct. That will test if a cancellation has been requested and will throw a OperationCanceledException a cancellation has been requested.