Inheritance: INotifyPropertyChanged
        public GarageDoorControl()
        {
            this.InitializeComponent();
            _model = new GarageDoorControlViewModel();
            this.DataContext = _model;

            this.Loaded += GarageDoorControl_Loaded;
        }
        public GarageDoorControl()
        {
            this.InitializeComponent();
            _model           = new GarageDoorControlViewModel();
            this.DataContext = _model;

            this.Loaded += GarageDoorControl_Loaded;
        }