Assembly: System.Web (in System.Web.dll)
Use the LoggingOut event to provide additional processing, such as cleaning up per-user data, before a user logs out of a site. The event can be canceled, so you can give the user the option of saving data such as a shopping cart or database changes before leaving the Web site.
For more information about handling events, see Events and Delegates.
The method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.Notes to Inheritors
When overriding in a derived class, be sure to call the base class's method so that registered delegates receive the event.
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.