public SettingsWindow()
        {
            InitializeComponent();

            _model = new SettingsWndViewModel();
            this.DataContext = _model;
            SectionsViewer.SelectedIndex = 0;
        }
        public SettingsWindow()
        {
            InitializeComponent();

            _model                       = new SettingsWndViewModel();
            this.DataContext             = _model;
            SectionsViewer.SelectedIndex = 0;
        }