ASP.NET MVC使用松散耦合的WCF Web服务

The reason why I need loosely-coupled WCF because Entity Framework is tightly-coupled. When I say loosely-coupled, there's no need to instantiate the database context or add the service reference of WCF. It just rely on web configuration or some .ini file that does not require compilation when developers need to change servers, ip address or service url's.The reason why I need loosely-coupled WCF becau