Handling multiple cancellation sources
Background tasks can leverage CancellationTokenSource to receive cancellation requests from as many sources as necessary. The static CancellationTokenSource.CreateLinkedTokenSource method accepts an array of CancellationToken objects to create a new CancellationTokenSource object that will notify us of cancellation if any of the source tokens receives a request to cancel.
Let’s look at a quick example of how to implement this in our CancellationPatterns project:
- First, open the
PollingExampleclass. We are going to create an overload of theCancelWithPollingmethod that accepts aCancellationTokenSourceparameter. The two overloads ofCancelWithPollingwill look like this:public static void CancelWithPolling() { using CancellationTokenSource tokenSource = new(); CancelWithPolling(tokenSource); } public static void CancelWithPolling (CancellationTokenSource...