In this tutorial, you will add an event routine to the Employees filter that listens for a signal indicating employee details have changed and then updates the instance list.
Objective
- To learn how to signal that an event has happened in your filter or command handler to other active filters or command handlers so that they can take appropriate action (see Event Signaling Service).
- To learn how to update an entry in the instance list (see List Manager Methods).
To achieve this objective, you will complete the following steps:
- Step 1. Change Employee Surname and Save the Changes
- Step 2. Add the avSignalEvent to the Employee Details Command Handler
- Step 3. Add a Routine to Listen for the EMPLOYEE_CHANGED Event
- Step 4. Test Signaling
- Summary
Before You Begin
In order to complete this tutorial, you must have completed the following:
- Tutorials VLF000 – VLF007WIN and VLF009WIN