Criando um Navegador IExplorer no VS2008/C#

Navegador no IExplorer linguagem C# 

  

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;
namespace Navegador
{
    public partial class Navegador : Form
    {
        string site = "";

        public Navegador()

        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)

        {

        }

        private void btnIr_Click(object sender, EventArgs e)

        {
            if (textBox1.Text != "")
            {

                webBrowser1.Navigate(textBox1.Text);

            }

        }

        private void btnHome_Click(object sender, EventArgs e)

        {
            webBrowser1.GoHome();
        }

        private void Navegador_FormClosed(object sender, FormClosedEventArgs e)

        {
            if (MessageBox.Show("Deseja mesmo Fechar?", "Fechar", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.Cancel)
            {

                Close();

            }

        }
    }