GridView Scroll to a desired group in a Windows Store App

By default, in a Windows Store App, the focus in a GridView is given to the element "0" of the group "0". But what if you wanto to change this behaviour and make it "open" to another element?

To do it, you have to manage the  itemGridView_Loaded event and use the CollectionView:

In XAML:

<GridView

    x:Name="itemGridView"

    AutomationProperties.AutomationId="ItemGridView"

    AutomationProperties.Name="Grouped Items"

    Grid.RowSpan="2"

    Padding="116,137,40,46"

    ItemsSource="{Binding Source={StaticResource groupedItemsViewSource}}"

    ItemTemplate="{StaticResource Standard250x250ItemTemplate}"

    SelectionMode="None"

    IsSwipeEnabled="false"

    IsItemClickEnabled="True"

    ItemClick="ItemView_ItemClick"

    Loaded="itemGridView_Loaded">

Incode-behind:

private bool firstTime = true;
        
   private void itemGridView_Loaded(object sender, RoutedEventArgs e)
   {
        ICollectionView view;
        ICollectionViewGroup myGroup;
        Data.MyDataType myItem;
 
        if (!this.firstTime) return; else firstTime = false;
        view = itemGridView.ItemsSource as ICollectionView;
        view.CurrentChanged += view_CurrentChanged;
        int groupIndex = 2; // an integer value between 0 and # of items in the groups collection
        myGroup = view.CollectionGroups[groupIndex] as ICollectionViewGroup;
        myItem = recipeGroup.GroupItems[0] as Data.MyDataType;
        view.MoveCurrentTo(myItem);
    }
     
    private void view_CurrentChanged(object sender, object e)
    {
        ICollectionView view;
        Data.MyDataType  myItem;
         
        view = itemGridView.ItemsSource as ICollectionView;
        view.CurrentChanged -= view_CurrentChanged;
        myItem = view.CurrentItem as Data.MyDataType;
        itemGridView.ScrollIntoView(view.CurrentItem, ScrollIntoViewAlignment.Leading);
    }