private async void ThirdPivot_Loaded(object sender, RoutedEventArgs e)
{
var favourites = await FavouritesDataSource.GetFavouritesByDayAsync(ThirdGroupName);
this.DefaultViewModel[ThirdGroupName] = favourites;
}
private async void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
{
var favourites = await FavouritesDataSource.GetFavouritesByDayAsync(FirstGroupName);
this.DefaultViewModel[FirstGroupName] = favourites;
}
