简介：本系统是一个基于工厂模式的三层架构项目，基于VS2005 开发，结构简洁，配合动软Codematic代码生成器，可以使开发效率事半功倍，倍感轻松。-Introduction: This system is a factory-based model projects a three-tier system, based on the VS2005 development, structural simplicity, coupled with dynamic soft Codematic