public virtual IDictionary BooksAndQuantitys()
{
var booksAndQuantitys = new Dictionary <string, int>();
SaleDetails.ForEach(aSaleDetail => booksAndQuantitys.Add(aSaleDetail.Book, aSaleDetail.Quantity));
return(booksAndQuantitys);
}
public virtual void AddBooksWithOcurrencies(Dictionary <string, int> listBooksWithOccurrences)
{
SaleDetails.ForEach(aDetail => aDetail.AddBookWithOcurrencie(listBooksWithOccurrences));
}