public override void Add(KeyValuePair <TKey, TValue> pair)
{
DoReadWriteNotify(
() => _sorter.GetInsertIndex(_internalCollection.Count, pair.Key, i => _internalCollection.List[i].Key),
(index) => _internalCollection.Insert(index, pair),
(index) => new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, pair, index)
);
}
protected override int IListAdd(T item)
{
return(DoReadWriteNotify(
() => _sorter.GetInsertIndex(ImmutableList.Count, item, i => _internalCollection[i]),
(index) => ImmutableList.Insert(index, item),
(index) => new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, item, index)
));
}