SharpSSH is not working

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Tamir.SharpSsh;
using Tamir.SharpSsh.jsch;
using Tamir.Streams;
namespace WpfApplication1
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void image1_ImageFailed(object sender, ExceptionRoutedEventArgs e)
        {
        }
        public void textBox1_TextChanged(object sender, TextChangedEventArgs e)
        {
            string strval = textBox1.Text;
        }
        public void button2_Click(object sender, RoutedEventArgs e)
        {
            string host = "192.168.1.9";
            string uname = "root";
            string passwd = "test";
            string commnd = "ls";
           SshStream ssh = new SshStream(host, uname, passwd);
            //Set the end of response matcher character
           //Tamir.SharpSsh.SshStream (host, uname, passwd);
            ssh.Prompt = "ls";
            //Remove terminal emulation characters
            ssh.RemoveTerminalEmulationCharacters = true;
            ssh.Write(commnd+textBox1.Text);
            string response = ssh.ReadResponse();
            Console.Write(response);
        }

        public void viewbox1_show(object sender, TextChangedEventArgs e)
        {
        }

    }
}