说明：  第18章 WCF开发基础 WCF（Windows Communication Foundation）是.NET Framework的扩展，WCF 提供了创建安全的、可靠的、事务服务的统一框架，WCF 整合和扩展了现有分布式系统的开发技术，如Microsoft .NET Remoting、Web Services、Web Services Enhancements (WSE)等等，来开发统一的可靠的应用程序系统。
(Chapter 18 the basis of WCF development WCF (Windows Communication Foundation) is. NET Framework extension, WCF provides the creation of safe, reliable services in a unified framework, WCF integration and expansion of the existing development of distributed systems technologies such as Microsoft. NET Remoting, Web Services, Web Services Enhancements (WSE) and so on, to develop a unified system of reliable applications.)