多任务同时取消

 class Program
    {
        static System.Threading.CancellationTokenSource cancelTokenSource = new System.Threading.CancellationTokenSource();
        static void Main(string[] args)
        {
            Task.Factory.StartNew(MyTask_1, cancelTokenSource.Token);
            Task.Factory.StartNew(MyTask_2, cancelTokenSource.Token);

            Console.WriteLine("请按Enter键停止");
            Console.ReadLine();
            cancelTokenSource.Cancel();
            Console.WriteLine("已停止");
            Console.ReadLine();

        }
        static void MyTask_1()
        {
            //判断是否任务取消
            while (!cancelTokenSource.IsCancellationRequested)
            {
                Console.WriteLine($"MyTask_1:{DateTime.Now}");
                System.Threading.Thread.Sleep(1000);
            }
        }

        static void MyTask_2()
        {
            //判断是否任务取消
            while (!cancelTokenSource.IsCancellationRequested)
            {
                Console.WriteLine($"MyTask_2:{DateTime.Now}");
                System.Threading.Thread.Sleep(1000);
            }
        }
}

参考文献：http://www.cnblogs.com/wlzhang/p/4604471.html