Microsoft NLayerApp采用基于WCF的分布式服务组件为外界（各种类型的GUI）提供了访问接口，客户端程序只需要添加Service引用即可使用NLayerApp应用程序所提供的功能。(Microsoft NLayerApp uses a distributed service component based on WCF to the outside world (types GUI) provides access to the interface, the client pro