List<ManualResetEvent> list = new List<ManualResetEvent>();
    for (int i = 0; i < 10; i++)
    {
        ManualResetEvent mre = new ManualResetEvent(false);
        System.Threading.Thread thread = new Thread((o) =>
        {
            Console.WriteLine("线程:{0}", System.Threading.Thread.CurrentThread.ManagedThreadId);
            ((ManualResetEvent)o).Set();
        });
        list.Add(mre);
        thread.Start(mre);
    }
    WaitHandle.WaitAll(list.ToArray());
    Console.WriteLine("所有线程完成任务！");