WCF 服务编程 本书回避了许多WCF的实现细节，更多的是注重使用WCF的实用性与可行性：如何应用WCF技术？如何选择可行的设计原则与编程模型？-WCF service programming book to avoid many of WCF implementation details, and more focus on the practicality and feasibility of using the WCF WCF technology: how to apply? How t