c# 用telnet 登陆交换机 查询及返回列表

命令列表：Password: ****
C1500> enable
Enable Password: ****
C1500# configure terminal
C1500(config)# interface pon 1/1
  %Enter configuration commands.End with Ctrl+Z or command "exit" & "end"
C1500(config-if-pon-1/1)#show legal-onu-info
ONU-ID    LLID  Status    MAC address        Type       Dist(M)  ActiveTime
--------------------------------------------------------------------------------
01/01:01  4     online    00:1a:69:7c:27:fd  M5-0404E   34       2013/10/24 19:2
2:57
01/01:02  1     online    00:1a:69:7c:27:8d  M5-0404E   37       2013/10/24 19:2
2:54
01/01:03  2     online    00:1a:69:78:fc:2b  M5-0404E   34       2013/10/24 19:2
3:04
01/01:04  3     online    00:1a:69:7c:28:3f  M5-0404E   34       2013/10/24 19:2
3:00  
代码：private void button1_Click(object sender, EventArgs e)
        {
            Process p = null;
            p = new Process();
            p.StartInfo.FileName = "cmd";
            p.StartInfo.Arguments = "/K start telnet 192.168.8.101";
            p.StartInfo.UseShellExecute = false;
            p.StartInfo.RedirectStandardInput = true;
            p.StartInfo.RedirectStandardOutput = true;
            p.StartInfo.RedirectStandardError = true;
            p.StartInfo.CreateNoWindow = false;
            p.Start();
            p.OutputDataReceived+=new DataReceivedEventHandler(p_OutputDataReceived);
            SendKeys.Send("123456\r");
            System.Threading.Thread.Sleep(500);
            SendKeys.Send("enable\r");
            System.Threading.Thread.Sleep(500);
            SendKeys.Send("123456\r");
            System.Threading.Thread.Sleep(500);
            SendKeys.Send("configure terminal\r");
            System.Threading.Thread.Sleep(500);
            SendKeys.Send("interface pon 1/1\r");
            System.Threading.Thread.Sleep(500);
            SendKeys.Send("show legal-onu-info\r");
            System.Threading.Thread.Sleep(800);
             
                 
            p.BeginOutputReadLine();
 
               
             p.WaitForExit();
            
             p.Close();
           } 
 
    private  void p_OutputDataReceived(object Sender, DataReceivedEventArgs e)
        {
            if (e.Data != null)
            {
                 
                result = e.Data;
              
            }
            
        }
              
取到的返回值都是空，有木有人用这种方法真正实现过(我主要是想取到最后的那个列表并在窗体里面显示)