An event handler is a method or a function that can handle user actions. An event handler is associated with a particular action so that you can write code that gets triggered when an action happens. This doc will cover the commonly used event handlers of EmpowerID objects.
This event handler fires after the code execution of an activity completes. It can be any activity, whether a Form Activity or a Lookup Activity on your workflow designer pane. If you need to perform a task after the workflow engine has executed your activity, you can write the code in this event handler of your activity.
Before Execute
This event handler invokes before the activity code executes. If you want to perform any task or action before entering into your activity placed on a workflow, then use this event handler.