This class is a custom System.EventArgs object for the SystemEvents.SessionEnding delegate. It provides additional information to your event handler about why the session is ending, and allows you to request that the session continue, by setting the Cancel property to true . Note that this is only a request, and you may not always be able to successfully cancel a shutdown operation. public class SessionEndingEventArgs : EventArgs { // Public Constructors public SessionEndingEventArgs (SessionEndReasons reason ); // Public Instance Properties public bool Cancel {set; get; } public SessionEndReasons Reason {get; } } HierarchySystem.Object System.EventArgs SessionEndingEventArgs Passed ToSessionEndingEventHandler.{BeginInvoke( ) , Invoke( )} |