Before Form Event

The Before Form event is triggered at the very start of the lifecycle of a Form. This event is only triggered the first time an end-user navigates to the Form.

Here are a few examples of things you might do:

Fetch data used across the whole Form.
Set up some preliminary data.
Process URL parameters.
Check end-user security settings.
Redirect the user to a different Page other than the first.
Redirect the user to a different Form, for example, a login page.

Note that the Before Form event is triggered before any Pages, so no interaction with Pages, or any of their Controls, is not possible.

Steps

Create a Form and add a Field called myField. Drag the Field onto the Page.

Open the Form Properties dialog and select the Events tab. Under Before Form, click the button to create a new Script. Name the script setMyField.