private void _folderSystems_ItemDropped(object sender, ListBoxItemDroppedEventArgs e)
{
// There is no ItemDragged event, and the dragged object does not fire selection change event either
// So we must change the selected folder system first, before attempting to move folder system
_component.SelectedFolderSystemIndex = e.DraggedIndex;
_component.MoveSelectedFolderSystem(e.DraggedIndex, e.DroppedIndex);
}
