C#编程-144：通过注册表修改IE主页

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 Microsoft.Win32;
namespace IEIconShowTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        //显示桌面IE图标
        private void btnShow_Click(object sender, EventArgs e)
        {
            //完整路径：HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\NewStartPanel
            RegistryKey hkcu = Registry.CurrentUser;
            RegistryKey IEIcon = hkcu.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\NewStartPanel", true);
            IEIcon.SetValue("B416D21B-3B22-B6D4-BBD3-BBD452DB3D5B", 0);
            MessageBox.Show("设置成功，刷新显示");
        }
        //隐藏桌面IE图标
        private void btnHide_Click(object sender, EventArgs e)
        {
            RegistryKey hkcu = Registry.CurrentUser;
            RegistryKey IEIcon = hkcu.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\NewStartPanel", true);
            IEIcon.SetValue("B416D21B-3B22-B6D4-BBD3-BBD452DB3D5B", 1);
            MessageBox.Show("设置成功，刷新显示");
        }
        //设置IE主页
        private void btnSetup_Click(object sender, EventArgs e)
        {
            //完整路径：
            //HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
            //HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main
            string homePage = "http://www.baidu.com";
            RegistryKey hkcu = Registry.CurrentUser;
            RegistryKey homePage1 = hkcu.OpenSubKey(@"Software\Microsoft\Internet Explorer\Main", true);
            RegistryKey hklm = Registry.LocalMachine;
            RegistryKey homePage2 = hklm.OpenSubKey(@"Software\Microsoft\Internet Explorer\Main", true);
            if (txtHome.Text != "")
            {
                homePage1.SetValue("StartPage", homePage);
                homePage2.SetValue("StartPage", homePage);
                MessageBox.Show("设定成功：" + homePage);
            }
            else
                MessageBox.Show("请先输入正确的网址！");
            {
            }
        }
    }
}