/// <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 async void NavigationHelper_LoadState(object sender, LoadStateEventArgs e) { // TODO: Create an appropriate data model for your problem domain to replace the sample data try { var sampleDataGroups = await SampleDataSource.GetGroupsAsync(); this.DefaultViewModel["Groups"] = sampleDataGroups; if (list.Count == 0) { for (int i = 0; i < 18; i++) { foreach (var item in sampleDataGroups.ElementAt(i).Items) { list.Add(item); } } } int gh = list.Count; var sampleDataGroups1 = await SampleDataSource.GetGroupsAsync1(); HubSection1.DataContext = sampleDataGroups1.ElementAt(0); HubSection2.DataContext = sampleDataGroups1.ElementAt(1); } catch (Exception eq) { } }