类似淘宝网的商品买卖，购物车，后台管理，用的sqlservce数据库(Sale of goods similar to Taobao,)

完美达到项目要求，后台与前台代码全部完善，购物车结算功能已经搞定……(Perfect to meet the requirements of the project, the background and front desk code is complete, the shopping cart settlement function has been done......)