C# 利用tcpclient來測試主機是否存在 非ping

 public bool ByTcpIp()

 {

 IPEndPoint tIPEndPoint = new IPEndPoint(IPAddress.Parse(IPv4Address), Port);

 TcpClient tClient = new TcpClient();

 tClient.Connect(tIPEndPoint);

 bool tResult = tClient.Connected;

 tClient.Close();

 return tResult;

 }