C#.net udp点对点聊天程序(2)

                if (ena)<span style="white-space:pre">        </span>//只有首先发送了，连接才能建立起来，所以ena在发送完第一条消息后设置为true  
                { 
                    byte[] data = new byte[1024]; 
                    int recv = server.ReceiveFrom(data, ref Remote); 
                    richTextBox1.AppendText(Encoding.Default.GetString(data)); 
                } 
            } 
        } 
private void myListen()
        {
            IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
            EndPoint Remote = (EndPoint)sender;
           

           
            while (true)
            {               
                if (ena)<span style="white-space:pre">  </span>//只有首先发送了，连接才能建立起来，所以ena在发送完第一条消息后设置为true
                {
                    byte[] data = new byte[1024];
                    int recv = server.ReceiveFrom(data, ref Remote);
                    richTextBox1.AppendText(Encoding.Default.GetString(data));
                }
            }
        }

客户端向服务器发送消息：

[csharp]
byte[] b = Encoding.Default.GetBytes(textBox3.Text + ":\n" + textBox7.Text+"\n");