Event rule

Event rule

The event rule can be used to detect an exit event or pre-operation event that has been raised and sent to this object under evaluation. An event is a simple construct consisting of a name, and a sender. An event rule will trigger if the event name matches that of the raised event. Optionally, you can further constrain the rule to match a particular sender, but only if the object under evaluation has a reference to the object that sent the event.