windows應用程式版的google搜尋引擎源碼

很多時候感覺用www.google.com搜尋網站挺麻煩的，查閱MSDN的知識庫後用C#寫了這個windows應用程式版的google搜尋引擎，主要調用了google開放出來的web service,不過搜尋時速度還不是很快，但至少省去了右鍵[在新視窗中開啟]的麻煩，以下是程式的源碼，雖然挺長的，不過關鍵代碼並不多，拋磚引玉吧。
//Form1.cs
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Diagnostics;
namespace WindowsApplication2
{
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.ListBox listBox1;
private String sKey;
private System.ComponentModel.Container components = null;
public Form1()
{
InitializeComponent();
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
private void InitializeComponent()
{
this.textBox2 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.listBox1 = new System.Windows.Forms.ListBox();