SessionID Manager

clipped from msdn.microsoft.com Session state runtime operation is implemented by the SessionStateModule class which plugs into the request processing pipeline in the application as an IHttpModule. SessionStateModule executes once before handler execution in the AcquireRequestState pipeline stage, and once after handler execution in the ReleaseRequestState pipeline stage (see Figure 1). In the AcquireRequestState stage, SessionStateModule attempts to extract the session ID from the request and retrieve the session data for that session ID from the session state store provider. If the session ID is present and the state is retrieved successfully, the module builds the session state dictionary that can be used by the handler to inspect and change the session state. Figure 1 Maintaining Session State