private void ItemsGridView_ItemClick(object sender, ItemClickEventArgs e)
{
ConnectedAnimationService.GetForCurrentView().DefaultDuration = TimeSpan.FromSeconds(0.5);
s_persistedItemIndex = ItemsGridView.Items.IndexOf(e.ClickedItem);
ItemsGridView.PrepareConnectedAnimation("BorderSource", e.ClickedItem, "BorderSource");
Frame.Navigate(typeof(NavigationFlowDestinationPage), s_persistedItemIndex);
}