程序代码：

using System;
using System.Windows.Forms;

namespace WebBrowser
{
    public partial class FormMain : Form
    {
        #region 构造函数

        public FormMain()
        {
            InitializeComponent();
            ButBackward.Click       += ButBackward_Click;
            ButForward.Click        += ButForward_Click;
            TbAddress.KeyDown       += TbAddress_KeyDown;
            Wb.CanGoBackChanged     += Wb_CanGoBackChanged;
            Wb.CanGoForwardChanged  += Wb_CanGoForwardChanged;
            Wb.DocumentTitleChanged += Wb_DocumentTitleChanged;
            Wb.Navigated            += Wb_Navigated;
        }

        #endregion

        #region 控件事件

        void ButBackward_Click(object sender, EventArgs e)
        {
            Wb.GoBack();
        }

        void ButForward_Click(object sender, EventArgs e)
        {
            Wb.GoForward();
        }

        void TbAddress_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter && !string.IsNullOrWhiteSpace(TbAddress.Text)) Wb.Navigate(TbAddress.Text);
        }

        void Wb_CanGoBackChanged(object sender, EventArgs e)
        {
            ButBackward.Enabled = Wb.CanGoBack;
        }

        void Wb_CanGoForwardChanged(object sender, EventArgs e)
        {
            ButForward.Enabled = Wb.CanGoForward;
        }

        void Wb_DocumentTitleChanged(object sender, EventArgs e)
        {
            Text = string.Concat("Web Broswer by  - ", Wb.DocumentTitle);
        }

        void Wb_Navigated(object sender, WebBrowserNavigatedEventArgs e)
        {
            TbAddress.Text = Wb.Url.ToString();
        }

        #endregion
    }
}