protected override void InsertItem(int index, SeriesItem item)
{
SeriesNode node = item.Node;
_map.Add(node, item);
if (!_list.Contains(node)) // this method is also called when initializing the list from the list, so we need to check this to avoid re-adding
{
_list.Insert(index, node);
}
base.InsertItem(index, item);
item.PropertyChanged += Item_PropertyChanged;
}
