1：加键 改值
Microsoft.Win32.RegistryKey Key = Microsoft.Win32.Registry.CurrentUser.CreateSubKey( @"Software\Microsoft\Internet Explorer\Main");
Key.SetValue( "Window Title" , value );
Key.Close();
2：获取键值
Microsoft.Win32.RegistryKey Key = Microsoft.Win32.Registry.CurrentUser.CreateSubKey( @"Software\Microsoft\Internet Explorer\Main");
return Key.GetValue( "Window Title" ).ToString();
3：删键
Microsoft.Win32.RegistryKey Key = Microsoft.Win32.Registry.LocalMachine.CreateSubKey( @"SOFTWARE\Microsoft\Windows\CurrentVersion\Policies");
Key.DeleteSubKeyTree( "Ratings" );
Key.Close();