想做一个C#自动在telnet敲命令的，可是登陆时候输入用户名textbox2.text 密码textbox3.text 如果用户名和密码不正确telnet会返回密码错误的代码 。我应该如何判断telnet返回的是什么呢 。 我是个新手，求大牛指点
码
TelnetSocket socket = new TelnetSocket();
socket.OnExceptionCaught += TelnetSocket.ExceptionCaught;
socket.OnDataReceived += TelnetSocket.DataReceived;
socket.Connect("192.168.1.1");
MessageBox.Show("1");
socket.WaitFor( "Login:");
//socket.WaitFor("BCM96828 Broadband Router" + "\r\n" + "Login:");
MessageBox.Show("2");
socket.Write(textBox2.Text.ToString() + "\r\n");
socket.WaitFor("Password:");
socket.Write(textBox3.Text.ToString() + "\r\n");
MessageBox.Show("3!");
socket.Close();
