Microsoft Windows Communication Foundation Step by Step (Step By Step Developer Series)

In this chapter, you have seen the different options that the WCF runtime provides for creating an instance of a service. A service instance can exist for the duration of a single operation or for the entire session, until the client application closes the connection. In many cases, a service instance is private to a client, but WCF also supports singleton service instances that can be shared by multiple instances of a client. You have also seen how you can selectively control which operations create a new session and which operations close a session.