在控制台程序中用下面这段代码可以不断的接收送至端口的数据
        static void Main(string[] args)
        {
            Console.WriteLine("Sever is running...");
            IPAddress ip = new IPAddress(new byte[] {192,168,2,68});
            TcpListener listener = new TcpListener(ip,3000);
            listener.Start();

            TcpClient tcpClient = listener.AcceptTcpClient();
            
            NetworkStream ns = tcpClient.GetStream();

            while (true)
            {
                byte[] data = new byte[tcpClient.ReceiveBufferSize];

                int numBytesRead = ns.Read(data, 0, System.Convert.ToInt32(tcpClient.ReceiveBufferSize));
                Console.WriteLine(Encoding.ASCII.GetString(data, 0, numBytesRead));
            }
但是在windows窗体中把这个代码做成一个函数，然后用button调用这个函数使其在文本中显示就不可以，窗体始终没有响应，这是什么原因？
         private void ReceiveData()
         {           
            IPAddress ip = new IPAddress(new byte[] {192,168,2,68});
            TcpListener listener = new TcpListener(ip,3000);
            listener.Start();

            TcpClient tcpClient = listener.AcceptTcpClient();
            
            NetworkStream ns = tcpClient.GetStream();

            while (true)
            {
                byte[] data = new byte[tcpClient.ReceiveBufferSize];

                int numBytesRead = ns.Read(data, 0, System.Convert.ToInt32(tcpClient.ReceiveBufferSize));
                //Console.WriteLine(Encoding.ASCII.GetString(data, 0, numBytesRead));
                string msg=Encoding.ASCII.GetString(data,0,numBytesRead);
                textBoxTheDataReceived.Text = msg;
            }
         }
         private void buttonConnectVision_Click(object sender, EventArgs e)
         {
             ReceiveData();
         }

代码是没有问题的,这个现象就是我们常说的窗体假死现象,从你在button的click事件中就可以看出,这是一个单线程程序,而ns.read是线程阻塞的,也就是没有数据过来的时候,线程会一直停留在这里等待,这个时候,窗体就假死了,是看不到任何东西的.一般有线程阻塞的方法都需要使用另外的线程去调用,而不影响主线程

高手啊！新生路过！