Ping 操作

  Ping pingSender = new Ping();

                PingOptions options = new PingOptions();

                options.DontFragment = true;

                string data = "test";

                byte[] buffer = Encoding.ASCII.GetBytes(data);

                int timeout = 120;

                PingReply reply = pingSender.Send(strIP, timeout, buffer, options);

                return (reply.Status == IPStatus.Success);