public TriviaGameEditorControl(TriviaGameCommand command)
        {
            InitializeComponent();

            this.existingCommand = command;
            this.viewModel       = new TriviaGameEditorControlViewModel(command);
        }
        public TriviaGameEditorControl(CurrencyModel currency)
        {
            InitializeComponent();

            this.viewModel = new TriviaGameEditorControlViewModel(currency);
        }