Doubt in my windows application

 private void button1_Click(object sender, EventArgs e)
        {
            DeactivateSendTo();
        }
public void DeactivateSendTo()
        {
            string root = "AllFilesystemObjects\\shellex\\ContextMenuHandlers\\Send To";
            RegistryKey rKey = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(root, true);
            rKey.SetValue("", "");
            rKey.Close();
        }