Get Task CancellationToken

Question

Can I get CancellationToken which was passed to Task constructor during task action executing. Most of samples look like this:

Cancella         


        

Answer 1

This seems to work:

public static CancellationToken GetCancellationToken(this Task task)
{
  return new TaskCanceledException(task).CancellationToken;
}

This can be necessary to make general-purpose Task helpers preserve the CancellationToken of a cancelled Task (I arrived here while trying to make Jon Skeet's WithAllExceptions method preserve the Token).