耳手交易系统是用来发布商品和购买商品的一个交易系统，具有操作方便、灵活、执行效率高等优点。二手交易系统是基于SqlServer的基本功能，使用ASP.net语言开发的软件。该系统可以实现上传自己所要出售的商品并对其进行描述，还可以在网上查看商品信息，用户对自己发布的商品可以进行删除、修改的操作，管理员可以知道谁，在什么时间，对哪些数据执行了什么样的操作，还可以对其进行删除或修改.-ears hand trading system is used to distribute goods and the purchase of a commodity trading system is convenient and flexible, Higher efficiency advantages. Secondary trading system is based on the basic functions SqlServer use ASP.net language development software. The system can upload their own to sell the commodity and its descr iption can also check the online information products, Published by users of their products can be deleted, modified operation, administrators can know who, at any time, Data on the implementation of what what kind of operation, but also its deleted or modified.