C#实现一个功能简单的web浏览器

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为相应的控件添加相应的事件响应代码，完整代码如下： using System; using System.Collections.Generic; 
using System.ComponentModel; using System.Data; 
using System.Drawing; using System.Text; 
using System.Windows.Forms; using System.IO; 
namespace Web浏览器 
{ 
public partial class Form1 : Form 
{
 public Form1() 
{
 InitializeComponent();
 } 
private void Navigate(string address) 
{ 
if (String.IsNullOrEmpty(address)) 
return;
 if (address.Equals("about:blank")) return;
 if (!address.StartsWith("http://")) address = "http://" + address; 
try { 
Cursor.Current = Cursors.WaitCursor; webBrowser1.Navigate(new Uri(address)); 
} 
catch (System.UriFormatException) 
{ return; }
 finally { Cursor.Current = Cursors.Default; } 
} 
private void Form1_Load(object sender, EventArgs e) 
{ 
toolStrip1.ImageList = imageList1;
 tbBack.ImageIndex = 0;
 tbForward.ImageIndex = 1;
 tbRefrash.ImageIndex = 2; 
tbHome.ImageIndex = 3; 
} 
private void comboBox1_KeyDown(object sender, KeyEventArgs e) 
{ if (e.KeyCode == Keys.Enter) { 
Navigate(comboBox1.Text);
 comboBox1.Items.Add(comboBox1.Text); 
}
} 
private void tbBack_Click(object sender, EventArgs e)
{ 
 webBrowser1.GoBack(); 
} 
private void tbForward_Click(object sender, EventArgs e) 
{ 
    webBrowser1.GoForward();
 } 
private void tbRefrash_Click(object sender, EventArgs e) 
{ 
i  f (!webBrowser1.Url.Equals("about:blank")) 
   { 
webBrowser1.Refresh(); 
} 
} 
private void tbHome_Click(object sender, EventArgs e) 
{ 
webBrowser1.GoHome();
 } 
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
 { 
Navigate(comboBox1.Text); 
}
private void 打开ToolStripMenuItem_Click(object sender, EventArgs e) 
{ 
  openFileDialog1.ShowDialog(); 
  webBrowser1.DocumentText = File.ReadAllText(openFileDialog1.FileName,Encoding.GetEncodin("gb2312")); 
} 
private void 关闭ToolStripMenuItem_Click(object sender, EventArgs e) 
{ 
   this.Close(); 
} 
private void Form1_Resize(object sender, EventArgs e)
{ 
   webBrowser1.Width = this.Width - 25;
   webBrowser1.Height = this.Height - 130; 
   comboBox1.Width = this.Width - 55; 
}
private void toolStripButton1_Click(object sender, EventArgs e) 
{ 
   webBrowser1.GoSearch(); 
} 
} 
} 
（3）程序说明：本程序只是实现一个功能简单的wen浏览器效果，功能强大的wen浏览器，正在制作中，目的给初学者一个，开山引水的作用。 
               

本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/28528/showart_1675807.html