private string SendCMD(string message)

        {

            throw new Exception("eeee");

            sendBuffer = Encoding.Default.GetBytes(message);



            //Prepare arguments for send/receive operation. 

            SocketAsyncEventArgs completeArgs = new SocketAsyncEventArgs();

            completeArgs.SetBuffer(sendBuffer, 0, sendBuffer.Length);

            completeArgs.UserToken = clientSocket;

            completeArgs.RemoteEndPoint = hostEndPoint;

            completeArgs.Completed += new EventHandler<SocketAsyncEventArgs>(OnSend);



            //Start sending asyncronally. 

            clientSocket.SendAsync(completeArgs);



            //Wait for the send/receive completed. 

            AutoResetEvent.WaitAll(autoSendReceiveEvents);



            //Return data from SocketAsyncEventArgs buffer. 

            string sReturn = Encoding.Default.GetString(completeArgs.Buffer, completeArgs.Offset, completeArgs.BytesTransferred);



            return sReturn;

        }



        //OnSend方法使用

        private byte[] receiveBuffer = new byte[4096];



        private void OnSend(object sender, SocketAsyncEventArgs e)

        {

            throw new Exception();



            autoSendReceiveEvents[RecevieOperation].Set();



            if (e.SocketError == SocketError.Success)

            {

                if (e.LastOperation == SocketAsyncOperation.Send)

                {

                    //Prepare receiving.

                    Socket s = e.UserToken as Socket;

                    if (s != null)

                    {

                        //throw new OutOfMemoryException();

                        e.SetBuffer(receiveBuffer, 0, receiveBuffer.Length);

                        e.Completed += new EventHandler<SocketAsyncEventArgs>(OnReceive);



                        s.ReceiveAsync(e);

                    }

                }

            }

            else

            {

                ProcessError(e);

            }

        }