Updates the expiration date and time of an item in the session data store.
Assembly: System.Web (in System.Web.dll)
the EnableSessionState attribute is true, or
If an ASP.NET page is requested and the EnableSessionState attribute is set to false, the method is still called to update the expiration date and time of the data in the session data store.
For an example of a session-state store provider implementation, see Implementing a Session-State Store Provider.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.