protected virtual void OnCollectionChanged(NotifyCollectionChangedAction action, List <T> items, int?index = null)
{
if (index.HasValue)
{
CollectionChanged(this, new NotifyCollectionChangedEventArgs(action, items, index.Value));
}
else
{
CollectionChanged(this, new NotifyCollectionChangedEventArgs(action, items));
}
OnPropertyChanged(ClrExtensions.PropertyName(() => Count));
}
public new virtual void TrimExcess()
{
base.TrimExcess();
OnPropertyChanged(ClrExtensions.PropertyName(() => Count));
}