asp.net 异步处理

 #region   异步测试
         //委托
         public delegate void PrintDelegate(string s);
         [WebMethod]
         public string yibu()
         {
             //主线程
             PrintDelegate printDelegate = Print;
             printDelegate.BeginInvoke("", PrintComeplete, printDelegate);
             return "OK";
         }

         public static void Print(string s)
         {
             //"异步线程开始执行 逻辑方法在此写"
             //Thread.Sleep(5000);

         }
         //回调方法要求
         //1.返回类型为void
         //2.只有一个参数IAsyncResult
         public static void PrintComeplete(IAsyncResult result)
         {
             (result.AsyncState as PrintDelegate).EndInvoke(result);
             //Console.WriteLine("当前线程结束." + result.AsyncState.ToString());
         }
         #endregion