快速检测网络通断

System.Net.NetworkInformation.Ping pingSender = new System.Net.NetworkInformation.Ping();
            PingOptions options = new PingOptions();
            options.DontFragment = true;
            string data = "";
            byte[] buffer = Encoding.UTF8.GetBytes(data);
            int timeout = 120;
            PingReply reply = pingSender.Send("192.168.2.202", timeout, buffer, options);
            if (reply.Status == IPStatus.Success)
            {
            }