/// <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)
{
// Featured recipe
var favorites = await SampleDataSource.GetFavoriteRecipesAsync(1);
this.DefaultViewModel["Section1Item"] = favorites.SingleOrDefault();
// International Cuisine
var groups = await SampleDataSource.GetGroupsAsync();
this.DefaultViewModel["Section2Items"] = groups;
// Top rated
var topRated = await SampleDataSource.GetTopRatedRecipesAsync(6);
this.DefaultViewModel["Section3Items"] = topRated;
}