wpf 怎样让BackgroundWorker强行结束,或者设置TcpListener的超时时间??

悬赏园豆：5 [已解决问题] 解决于 2012-07-25 13:16

我利用BackgroundWorker新建一个线程来接受TCP上传来的数据,但是想要停止接受的时候遇到问题了.dowork事件函数如下:

void recieveWorker_DoWork(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker work = sender as BackgroundWorker;
            int port = (int)e.Argument;
            TcpListener tcpListener;
            TcpClient tcpClient;
            NetworkStream networkStream;
            tcpListener = new TcpListener(IPAddress.Any, port);
            

           IPEndPoint clientPoint;

           string receiveStr = "";
           byte[] reveiveByte = new byte[1024];
           int bytes = 0;

            try
            {
                
                tcpListener.Start();
            }
            catch(Exception exp) 
            {
                MessageBox.Show(exp.Message);
                return;
            }
            while(!work.CancellationPending)
            {
                try
                {
                    tcpClient = tcpListener.AcceptTcpClient();
                }
                catch (Exception exp)
                {
                    MessageBox.Show(exp.Message);
                    return;
                }
                clientPoint = (IPEndPoint)(tcpClient.Client.RemoteEndPoint);

                networkStream = tcpClient.GetStream();
                try
                {
                    receiveStr = "";
                    while (true)
                    {
                        bytes = networkStream.Read(reveiveByte, 0, reveiveByte.Length);
                        if (bytes <= 0)
                            break;
                        receiveStr += Encoding.ASCII.GetString(reveiveByte, 0, bytes);
                    }
                    networkStream.Close();
                    work.ReportProgress(0, receiveStr);
                                        
                }
                catch(Exception exp)
                {
                    MessageBox.Show(exp.Message);
                }
                tcpClient.Close();
                tcpListener.Stop();
            }         
        }