private void OnHierarchicalItemsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e) { foreach (var item in e.GetAddedItems(sender).OfType <VirtualTreeViewItem>()) { item.ParentTreeView = this; } }
private void OnHierarchicalItemsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e) { foreach (var item in e.GetAddedItems(sender).OfType <VirtualTreeViewItem>()) { item.ParentTreeView = this; } }