C#使用ping命令的两个例子

private static string CmdPing(string strIp){  Process p = new Process(); p.StartInfo.FileName = "cmd.exe";//设定程序名  p.StartInfo.UseShellExecute = false; //关闭Shell的使用  p.StartInfo.RedirectStandardInput = true;//重定向标准输入  p.StartInfo.RedirectStandardOutput = true;//重定向标准输出  p.StartInfo.RedirectStandardError = true;//重定向错误输出  p.StartInfo.CreateNoWindow = true;//设置不显示窗口  string pingrst; p.Start(); p.StandardInput.WriteLine("ping " + strIp);  p.StandardInput.WriteLine("exit");  string strRst = p.StandardOutput.ReadToEnd();    if (strRst.IndexOf("(0% loss)") != -1)  {    pingrst = "连接";  }  else if (strRst.IndexOf("Destination host unreachable.") != -1)  {    pingrst = "无法到达目的主机";  }  else if (strRst.IndexOf("Request timed out.") != -1)  {    pingrst = "超时";  }  else if (strRst.IndexOf("Unknown host") != -1)  {    pingrst = "无法解析主机";  }  else  {    pingrst = strRst;  }  p.Close();  return pingrst;}

private void displayReply(PingReply reply) //显示结果{  Ping p1 = new Ping(); //只是演示，没有做错误处理    PingReply reply = p1.Send("填写ip地址");    StringBuilder sbuilder ;  if (reply.Status == IPStatus.Success)  {    　　sbuilder = new StringBuilder();    　　sbuilder.Append(string.Format("Address: {0} ", reply.Address.ToString ()));    　　sbuilder.Append(string.Format("RoundTrip time: {0} ", reply.RoundtripTime));    　　sbuilder.Append(string.Format("Time to live: {0} ", reply.Options.Ttl));    　　sbuilder.Append(string.Format("Don't fragment: {0} ", reply.Options.DontFragment));    　　sbuilder.Append(string.Format("Buffer size: {0} ", reply.Buffer.Length));    　　response.write(sbuilder.ToString());  }  else if (reply.Status == IPStatus.TimeOut)　　  {    response.write("超时");  }else{    response.write("失败");  }