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private string GetDefaultPolicyNameFromRegistry()
    {
        string registryControlCenterKeyName;
        RegistryKey key;
        try
        {
            if (System.Runtime.InteropServices.Marshal.SizeOf(typeof(IntPtr)) == 8)
                registryControlCenterKeyName = "SOFTWARE\\Wow6432Node\\xxx\\ControlCenter\\";
            else
                registryControlCenterKeyName = "SOFTWARE\\xxx\\ControlCenter\\";

            key = Registry.LocalMachine.OpenSubKey(registryControlCenterKeyName); ;

        }
        catch (Exception ex)
        {
            throw new ArgumentException("Registry open 'ControlCenter' key error: " + ex.Message);
        }

       return (string)key.GetValue("DefaultPolicy");
    }