public ExtendedObservableCollection <BookType> UpdateBookTypeCollection()
{
_bookTypeCollection.SynchronizeWith(new Collection <BookType>(Registry.Get <BookTypeDataLayer>().GetAll().ToList()), this);
return(BookTypeCollection);
}
public ExtendedObservableCollection <BookDataGridItem> UpdateBookCollection()
{
_itemsCollection.SynchronizeWith(new Collection <BookDataGridItem>(Registry.Get <BookDataLayer>().GetAll(Filter)), this);
return(BookDataGridItems);
}
