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

As other answers state, you can pass the token as a parameter to your method. However, it's important to remember that you still want to pass it to the Task as well. Task.Factory.StartNew( () => YourMethod(token), token), for example.

This insures that:

1. The Task will not run if cancellation occurs before the Task executes (this is a nice optimization)

2. An OperationCanceledException thrown by the called method correctly transitions the Task to a Canceled state