说明：  学c#的时候用的源码，超市进销存销售管理系统， 附加数据库SQL Server 2005 本系统属于小型的超市进销存销售管理系统，可以有效地对中小型超市进行管理
(Learn c# source code, supermarket Invoicing sales management system, the additional database SQL Server 2005 this system belongs to a small supermarket Invoicing sales management system can effectively manage small and medium-sized supermarkets)