using (RegistryKey key = Registry.CurrentUser.CreateSubKey(@"Software\Microsoft\Windows\CurrentVersion\Policies\Explorer"))            { key.SetValue("NoActiveDesktop",1,RegistryValueKind.DWord);//禁用活动桌面 key.SetValue("ForceActiveDesktopOn", 1, RegistryValueKind.DWord);//启用活动桌面}

RegistryKey key = Registry.CurrentUser.CreateSubKey(@"Software\Microsoft\Windows\CurrentVersion\Policies\Explorer";key.SetValue("NoDeskTop",1,RegistryValueKind.DWord);//隐藏桌面图标 key.SetValue("NoDeskTop", 0, RegistryValueKind.DWord);//显示桌面图标

using (RegistryKey key = Registry.CurrentUser.CreateSubKey(@"Software\Microsoft\Windows\CurrentVersion\Policies"))            {                using (RegistryKey subkey=key.CreateSubKey("System"))                {                     subkey.SetValue("NoDispAppearancePage", 1, RegistryValueKind.DWord);//隐藏外观                    subkey.SetValue("NoDispBackgroundPage", 1, RegistryValueKind.DWord);//隐藏背景}}

            using (RegistryKey key = Registry.CurrentUser.CreateSubKey(@"Software\Policies\Microsoft"))            {                using (RegistryKey subkey = key.CreateSubKey("Windows"))                {                    using (RegistryKey rgkey = key.CreateSubKey("Control Panel"))                    {                        using (RegistryKey objkey = key.CreateSubKey("Desktop"))                        {                            objkey.SetValue("ScreenSaveActive", 0, RegistryValueKind.String);//禁止使用屏幕保护objkey.SetValue("ScreenSaverIsSecure", 1, RegistryValueKind.String);//启用屏幕保护密码                        }                    }                }            }

 using (RegistryKey key = Registry.CurrentUser.CreateSubKey(@"Software\Microsoft\Windows\CurrentVersion\Policies\System"))            {                key.SetValue("DisableRegistryTools",1,RegistryValueKind.DWord);//创建值，禁用注册表 RegistryKey rgK = Registry.CurrentUser;                rgK.DeleteSubKey(@"Software\Microsoft\Windows\CurrentVersion\Policies\System");//删除键 启用             }

修改IE浏览器标题栏内容  using (RegistryKey key = Registry.CurrentUser.CreateSubKey(@"Software\Microsoft\Internet Explorer\Main"))            {                key.SetValue("Window Title", this.txt.Text, RegistryValueKind.String);//创建值，使用标题 key.DeleteValue("Window Title",false);//删除设置的标题            }

设置IE浏览器的下载路径using (RegistryKey key = Registry.Users.CreateSubKey(@".DEFAULT\Software\Microsoft\Internet Explorer"))            {                key.SetValue("Download Directory",this.textBox1.Text,RegistryValueKind.String);//设置下载路径             }

using (RegistryKey key = Registry.CurrentUser.CreateSubKey(@"Software\Microsoft\Internet Explorer\Main"))            {                key.SetValue("Start Page", this.txt.Text, RegistryValueKind.String);//创建值，使用主页}

 using (RegistryKey key = Registry.CurrentUser.CreateSubKey(@"SoftWare\Policies\Microsoft\Internet Explorer\Control Panel"))            {                key.SetValue("HomePage", 1, RegistryValueKind.String);//禁止修改主页                key.SetValue("HomePage", 0, RegistryValueKind.String);//允许修改主页            }