/**
         * 29.员工查询商品信息
         * 参数:员工Id
         * 返回:本店所有商品信息的集合(通过测试)
         */
        public item[] getAllItemsOfThisShop(string staffId) {
            string shopId = getShopIdByStaffId(staffId);

            using (YMDBEntities db = new YMDBEntities())
            {
                stock[] currentStock = db.stock.Where(p => p.shopId == shopId).ToArray();
                item[] items = new item[currentStock.Length];
                for (int i = 0; i < currentStock.Length; i++)
                {
                    string currentItemId = currentStock[i].itemId;
                    items[i] = db.item.Where(p => p.itemId == currentItemId).FirstOrDefault();
                }
                return items;
            }
        }
        /**
         * 39.Boss增加商品
         * 参数:新增商品的名字、尺寸、颜色、价格
         * 返回:商品实例(测试通过)
         */
        public item addItemByBoss(string currentItemName, string currentItemSize, string currenttemColor, double currentItemPrice)
        {
            if (currentItemSize.Length > 5)
            {
                return null;
            }
            string newId = createNewId("item");

            using (YMDBEntities db = new YMDBEntities())
            {
                //decimal newItem = new item().itemPrice;
                item newItem = new item
                {
                    itemName = currentItemName,
                    itemSize = currentItemSize,
                    itemPrice = (decimal)currentItemPrice,
                    itemColor = currenttemColor,
                    itemDate = DateTime.Now,
                    itemId = newId,
                    itemStatus = 1,
                };
                db.item.Add(newItem);
                db.SaveChanges();

                return newItem;
            }

        }