System.ServiceModel 4.0.0.0 The interface is the base interface for all sessions. It contains a property for identifying the session. A session is a shared context among all participants in a communication exchange. This shared context is characterized by the following three properties: Session establishment - a process for establishing shared context among all participants. Message correlation - a method for correlating a group of messages to an instance of shared context. The interface is not informed as to the number of participants in a session or the lifetime of a session. These session properties are provided by associating an ID with a session. is inherited by: of type Defines the interface to establish a shared context among parties that exchange messages by providing an ID for the communication session. Property 4.0.0.0 System.String To be added. If the session is interrupted, it can be retrieved using the . Gets the ID that uniquely identifies the session.