ArcGISRuntime.UWP.Viewer.MainPage.OnFrameNavigationRequested C# (CSharp) Метод

        private void OnFrameNavigationRequested(object sender, BackRequestedEventArgs e)
        {
            if (Frame.CanGoBack && e.Handled == false)
            {
                e.Handled = true;
                Frame.GoBack();
            }
            _currentView.AppViewBackButtonVisibility = AppViewBackButtonVisibility.Collapsed;
        }