class Program{ public string cmdPing(string strIP) {   Process myProcess = new Process();   myProcess.StartInfo.FileName = "cmd.exe";   myProcess.StartInfo.UseShellExecute = false;   //要重定向 IO 流，Process 對象必須將 UseShellExecute 屬性設置為 False。   myProcess.StartInfo.RedirectStandardOutput = true;   myProcess.StartInfo.RedirectStandardInput = true;   myProcess.StartInfo.RedirectStandardError = true;   string pingstr;   myProcess.Start();   myProcess.StandardInput.WriteLine("ping " + strIP);   myProcess.StandardInput.WriteLine("exit");   string strRst = myProcess.StandardOutput.ReadToEnd();   if (strRst.IndexOf("(0% loss)") != -1)   pingstr = "連接";   else if (strRst.IndexOf("Destination host unreachable.") != -1)   pingstr = "無法到達主機";   else if (strRst.IndexOf("UnKonw host") != -1)   pingstr = "無法解析主機";   else   pingstr = strRst;   myProcess.Close();   return pingstr; } static void Main(string[] args) {  Program myProgram = new Program();  string returnString = myProgram.cmdPing("127.0.0.1");  Console.WriteLine(returnString);  Console.ReadLine(); }}

static void Main(string[] args){  Ping ping = new Ping();  PingOptions pingOption = new PingOptions(50, true);  string data = " you are a such a beautiful girl";  byte[] buffer = Encoding.ASCII.GetBytes(data);  PingReply pingReply = ping.Send("192.168.1.100", 20, buffer);  if (pingReply.Status == IPStatus.Success)  {   Console.WriteLine("address:{0}", pingReply.Address.ToString());   Console.WriteLine("Round Trip time {0}", pingReply.RoundtripTime);   Console.WriteLine("time to live:{0}", pingReply.Options.Ttl);   Console.WriteLine("Do not to fragement:{0}", pingReply.Options.DontFragment);  }  Console.ReadKey();}