这是我见过的最好的.net三层架构实例（源代码），对于想学.net和三层架构的人来说，简直是必须的。只要你把这个例子学习好，那你的三层架构肯定就没问题了。欢迎大家下载学习-This is the best I have seen the .Net three layer architecture examples (with source code ), for want to learn .Net and a three layer architecture, it is a must. As