/// <summary> /// Populates the page with content passed during navigation. Any saved state is also /// provided when recreating a page from a prior session. /// </summary> /// <param name="sender"> /// The source of the event; typically <see cref="NavigationHelper"/> /// </param> /// <param name="e">Event data that provides both the navigation parameter passed to /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested and /// a dictionary of state preserved by this page during an earlier /// session. The state will be null the first time a page is visited.</param> private void navigationHelper_LoadState(object sender, LoadStateEventArgs e) { var group = AllTests.GetGroup((String)e.NavigationParameter); this.DefaultViewModel["Group"] = group; this.DefaultViewModel["Items"] = group.Items; if (e.PageState == null) { this.itemListView.SelectedItem = null; // When this is a new page, select the first item automatically unless logical page // navigation is being used (see the logical page navigation #region below.) if (!this.UsingLogicalPageNavigation() && this.itemsViewSource.View != null) { this.itemsViewSource.View.MoveCurrentToFirst(); } } else { // Restore the previously saved state associated with this page if (e.PageState.ContainsKey("SelectedItem") && this.itemsViewSource.View != null) { var selectedItem = AllTests.GetItem((String)e.PageState["SelectedItem"]); this.itemsViewSource.View.MoveCurrentTo(selectedItem); } } }
/// <summary> /// Populates the page with content passed during navigation. Any saved state is also /// provided when recreating a page from a prior session. /// </summary> /// <param name="navigationParameter">The parameter value passed to /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested. /// </param> /// <param name="pageState">A dictionary of state preserved by this page during an earlier /// session. This will be null the first time a page is visited.</param> protected override void LoadState(Object navigationParameter, Dictionary <String, Object> pageState) { // TODO: Create an appropriate data model for your problem domain to replace the sample data var group = AllTests.GetGroup((String)navigationParameter); this.DefaultViewModel["Group"] = group; this.DefaultViewModel["Items"] = group.Items; if (pageState == null) { this.itemListView.SelectedItem = null; // When this is a new page, select the first item automatically unless logical page // navigation is being used (see the logical page navigation #region below.) if (!this.UsingLogicalPageNavigation() && this.itemsViewSource.View != null) { this.itemsViewSource.View.MoveCurrentToFirst(); } } else { // Restore the previously saved state associated with this page if (pageState.ContainsKey("SelectedItem") && this.itemsViewSource.View != null) { var selectedItem = AllTests.GetItem((String)pageState["SelectedItem"]); this.itemsViewSource.View.MoveCurrentTo(selectedItem); } } }