C#利用CancellationTokenSource实现Task任务取消

            //利用CancellationTokenSource实现Task任务取消
            CancellationTokenSource cts = new CancellationTokenSource();
            //注册一个线程取消后执行的逻辑
            cts.Token.Register(() =>
            {
                //这里执行线程被取消后的业务逻辑.
                Console.WriteLine("-------------被取消后的业务逻辑---------------------");
            });

            Task.Run(() =>
            {
                while (!cts.IsCancellationRequested)
                {
                    Thread.Sleep(100);
                    Console.WriteLine("当前thread={0} 正在运行", Thread.CurrentThread.ManagedThreadId);
                }
            }, cts.Token);

            //线程休眠到指定时间后取消
            //Thread.Sleep(2000);
            //cts.Cancel();

            //延时取消 2s后自动取消
            cts.CancelAfter(new TimeSpan(0, 0, 0, 2));
            Console.ReadKey();