C# 可取消的延时实现

方式1：

private void button2_Click(object sender, EventArgs e)
        {
            m_th = new Thread(new ThreadStart(CheckDogJob));
            m_th.IsBackground = true;
            m_th.Start();
        }

        private async void CheckDogJob()
        {
            try
            {
                Console.Write("start----");
                await Task.Delay(3000000, m_cts.Token);
               
                Console.Write("End----");
            }
            catch (OperationCanceledException)
            {
                Console.Write("Cancel----");
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            m_cts.Cancel();
        }

方式二：

 private void button2_Click(object sender, EventArgs e)
        {
            m_th = new Thread(new ThreadStart(CheckDogJob));
            m_th.IsBackground = true;
            m_th.Start();
        }

        private void CheckDogJob()
        {
            Console.Write("start----");
            Task.Delay(3000000, m_cts.Token).ContinueWith((t) =>
            {
                Console.Write("Cancel----");
            }, TaskContinuationOptions.OnlyOnCanceled).Wait();
            Console.Write("End----");
        }

        private void button3_Click(object sender, EventArgs e)
        {
            m_cts.Cancel();
        }

方式三

  private AutoResetEvent m_startDelayEvent = new AutoResetEvent(false);

priviate void Test()
{
    m_startDelayEvent.WaitOne(100000);
}


//取消
  m_startDelayEvent.Set();