C# winform工厂模式三层结构的实例，想开发多层系统的朋友，可以下下来学习一下。经典呀。-C# Winform factory pattern example of three-tier architecture, I would like to develop multi-layered system of friends, you can learn about the next down. Classic Yes.

以实例为依托，将三层架构的思想贯穿其中，让你迅速的理解三层架构的精髓-Examples based on the idea of a three-tier system will be running through them, let you quickly understand the essence of the three-tier structure

三层架构生成工具！学习C#的朋友，可不要错过啊！-ThreeLayer Tools！

Visual Studio 2008 开发的WEB 3层结构的代码,带数据库-Visual Studio 2008 development of the WEB 3 layer structure of the code, with a database