public AddFacturaPage()
 {
     this.InitializeComponent();
     con = new SQLiteConnection(Path.Combine(Windows.Storage.ApplicationData.Current.LocalFolder.Path, "FacturasBD.sqlite"));
     factDao = new FacturaDao(con);
     rootFrame = Window.Current.Content as Frame;
     SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = AppViewBackButtonVisibility.Visible;
     SystemNavigationManager.GetForCurrentView().BackRequested += AddFacturaPage_BackRequested;
 }
        public MainPage()
        {
            this.InitializeComponent();
            con = new SQLiteConnection(Path.Combine(Windows.Storage.ApplicationData.Current.LocalFolder.Path, "FacturasBD.sqlite"));
            factDao = new FacturaDao(con);
            facturas = App.Current.Resources["facturas"] as Facturas;
            rootFrame = Window.Current.Content as Frame;

        }