System\Configuration\ConfigurationElementCollection.cs (4)
628_items.Insert(index, new Entry(entryType, key, element));
631_items.Add(new Entry(entryType, key, element));
777_items.Insert(Count + _removedItemCount - _inheritedCount, new Entry(EntryType.Removed, key, null));
780_items.Add(new Entry(EntryType.Removed, key, null));