System.ServiceModel 4.0.0.0 System.ServiceModel.Channels.ISession To be added. The interface is the base interface for session-based channels. It associates the type of session with the channel by setting the generic type parameter to a type that implements the interface in a way that reflects its role in the message exchange. For example, the is set to for an incoming session on the receiving side of a one-way communication, to for an outgoing session on the sending side of a one-way communication, and to for a duplex session for a bi-directional communication pattern. The interface provides a property to retrieve the session with which the channel is associated. Defines the interface that associates a channel with a specific type of session. Property 4.0.0.0 TSession To be added. This returns the generic parameter used to define the interface. Gets the type of session associated with this channel.