public new void Clear()
{
CollectionChangeNotice?.Invoke(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
base.Clear();
}
public new void Remove(ListItem item)
{
CollectionChangeNotice?.Invoke(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, item));
base.Remove(item);
}
public new void Add(ListItem item)
{
CollectionChangeNotice?.Invoke(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, item));
base.Add(item);
}