public override void OnScroll(object sender, ScrollEventArgs e)
{
RequestExpandItems(e.FirstVisibleItem + e.VisibleItemCount);
e.IsFirstRow = e.FirstVisibleItem <= 0;
e.IsLastRow = e.TotalItemCount * _desiredColumnCount >= StackList?.Count;
ScrollListener?.OnScroll(sender, e);
ScrollCommand?.Execute(scrollEventArgs);
}
private void AssociatedObject_MouseWheel(object sender, MouseWheelEventArgs e)
{
ScrollCommand?.Execute(e.Delta < 0);
}