Occurs when the user ends the Windows session by logging off or shutting down the operating system.
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
By default, an application shuts down when the Windows session ends, which occurs when a user logs off or shuts down. When this happens, Windows asks each open application to shut down. However, it is possible that an application may not be ready to shut down when this occurs. For example, an application may have data that is in an inconsistent state, or in the middle of a long-running operation. In these situations, it may be desirable to prevent the session from ending, and may be more desirable to allow users the option to decide whether or not to let the session to end.
You can detect when a session ends by handling the event. If an application needs to prevent the session from ending, the SessionEndingCancelEventArgs argument that is passed to the event handler exposes the Cancel that you set to true (the default value is false).
is not raised by console applications.
is raised only on the thread that creates the Application object.
is not raised for XAML browser applications (XBAPs).
The following example demonstrates how to handle the event and allow the user to cancel it.