如何捕获事件中的异常？？？

[yellowwee]

SendCMD中throw的能捕获，OnSend中不行。怎么回事？

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);
            }
        }

[yellowwee]

那怎么才能处理这个异常呢？

[gomoku]

异常处理是基于栈进行的。因此它可以捕获当前线程的异常，却不能直接捕获其他线程的异常。

注意你代码中的SendAsync（异步发送）。

[yellowwee]

没答案

[马少华]

外面处理不了，就在方法里面处理

[以专业开发人员为伍]

线程不抛出异常。

如果一定要“捕获”，你可以在线程所执行的方法的接口上使用一个回调Action<Exception>类型的参数来处理。