void Collection_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (e.Action != NotifyCollectionChangedAction.Add || e.NewItems == null || e.NewItems.Count < 1)
{
return;
}
this.Dispatcher.Invoke(() => Target.ScrollIntoView(e.NewItems[e.NewItems.Count - 1]));
}
