Different ways to Monitor a Canceled task in TPL

WaysToMonitorCancelTasks.cs

CancellationTokenSource cancelSource = new CancellationTokenSource();
CancellationToken cancelToken = cancelSource.Token;

//1 Monitoring Cancellation with polling 
Task T1 = new Task(() =>
{
    for (int i = 0; i < int.MaxValue; i++)
    {
        if (token.IsCancellationRequested) {
          // tidy up and release resources
          throw new OperationCanceledException(cancelToken);
        } 
        else {
          // do a unit of work
        } 
        //To simplify you can also use the following if you don't have resources to release
        //cancelToken.ThrowIfCancellationRequested();
        Console.Write(i + ".");
    }
}, cancelToken);


//2 Use a Delegate to Monitor which will be called when tasks get cancelled
cancelToken.Register(() =>
{
    Console.WriteLine("Task Cancelled... *Do Something with Delegate*");
});


//3 Using a Wait Handle to Monitor a task
Task waitingTask = new Task(() =>
{
    Console.WriteLine(">>>Waiting for Task to be Cancelled *WaitHandle");
    cancelToken.WaitHandle.WaitOne();
    Console.WriteLine(">>>Wait Handle Released");
});


//Part where you start the task and cancel it using its cancellation source
T1.Start();
waitingTask.Start();
Console.ReadKey();
cancelSource.Cancel();