var udp = new UdpClient(8000);//开始本地监听端口
udp.Connect("192.168.1.10",9000);//远端udp的监听端口及远程ip地址(远程通讯目标为单个不变对象)
udp.Send(new byte[] {1, 2, 3}, 3);//向远端发送数据
var endPoint = new IPEndPoint(IPAddress.Any, 1000);
byte[] result = udp.Receive(ref endPoint);//接受返回数据