protected override void RemoveItem(int index) { DetailConfiguration detailConfig = this[index]; detailConfig.DetachFromContainingCollection(); DetailVisibilityChangedEventManager.RemoveListener(detailConfig, this); base.RemoveItem(index); }
protected override void InsertItem(int index, DetailConfiguration item) { if (item != null) { item.AttachToContainingCollection(this); DetailVisibilityChangedEventManager.AddListener(item, this); } base.InsertItem(index, item); }
protected override void ClearItems() { foreach (DetailConfiguration detailConfig in this) { detailConfig.DetachFromContainingCollection(); DetailVisibilityChangedEventManager.RemoveListener(detailConfig, this); } base.ClearItems(); }