public IPaginatedList GetItemListByProduct(string productId)
        {
            IPaginatedList itemList = null;

            itemList = _itemDao.GetItemListByProduct(productId);

            return(itemList);
        }
        public IPaginatedList GetItemListByProduct(Product product)
        {
            IPaginatedList itemList = null;

            itemList = _itemDao.GetItemListByProduct(product.Id);
            foreach (Item item in itemList)
            {
                item.Product = product;
            }

            return(itemList);
        }