ManualResetEvent和AutoResetEvent

          //ManualResetEvent reset=new ManualResetEvent(false);
            AutoResetEvent reset = new AutoResetEvent(false);
            ThreadPool.QueueUserWorkItem((WaitCallback) delegate
                                                            {
                                                                Console.WriteLine("Thread 1 wait one..");
                                                                reset.WaitOne();
                                                                Console.WriteLine("Thread 1 got");
                                                            });

            ThreadPool.QueueUserWorkItem((WaitCallback)delegate
                                                            {
                                                                Console.WriteLine("Thread 2 wait one..");
                                                                reset.WaitOne();
                                                                Console.WriteLine("Thread 2 got");
                                                            });
            ThreadPool.QueueUserWorkItem((WaitCallback)delegate
                                                            {
                                                                Console.WriteLine("Thread 3 wait one..");
                                                                reset.WaitOne();
                                                                Console.WriteLine("Thread 3 got");
                                                            });
            Console.ReadLine();
            reset.Set();
            Console.WriteLine("ok");

二者区别在于：AutoResetEvent 会在获取到控制权时自动设置事件为非终止状态。常用于多线程中独占资源，类似lock