public BeachBallGameEditorControl(BeachBallGameCommand command)
        {
            InitializeComponent();

            this.existingCommand = command;
            this.viewModel       = new BeachBallGameEditorControlViewModel(command);
        }
        public BeachBallGameEditorControl(UserCurrencyViewModel currency)
        {
            InitializeComponent();

            this.viewModel = new BeachBallGameEditorControlViewModel(currency);
        }