About Event Actions
An event action is defined as a unit of work to be performed during the execution of an event handler.
A single event handler can have multiple event actions, but each action is assigned to a single event handler.
Depending on its action type, an event action can do these things:
- Evaluate and compare expressions by using the results to select which event action of its event handler to perform next
 - Affect the application event's visual state
 - Complete the event handler
 - Set event variables
 - Call methods or web services
 - Perform other predefined tasks