学习C#实现UDP通信

richTextBox1.Text = string.Empty; //实例化UdpClient对象 UdpClient udpclient = new UdpClient(Convert.ToInt32(textBox2.Text)); //调用UdpClient对象的Connect建立默认远程主机 udpclient.Connect(textBox1.Text, Convert.ToInt32(textBox2.Text)); //定义一个字节数组，用来存放发送到远程主机的信息 Byte[] sendBytes = Encoding.Default.GetBytes(textBox3.Text); //调用UdpClient对象的Send方法将Udp数据报发送到远程主机 udpclient.Send(sendBytes, sendBytes.Length); //实例化IPEndPoint对象，用来显示响应主机的标识 IPEndPoint ipendpoint = new IPEndPoint(IPAddress.Any, 0); //调用UdpClient对象的Receive方法获得从远程主机返回的Udp数据报 Byte[] receiveBytes = udpclient.Receive(ref ipendpoint);