Developing form controls

Form controls provide the interface for the editing forms that allow users to input data in Kentico, both in the administration interface and on the pages of Portal Engine sites. Each form control represents a single field, and displays a certain form element, such as a text box for user input, a group of radio buttons, a selector etc.

Example of a form - the editing interface of each field is a form control

You can insert form controls into all editing forms that are based on the Kentico form engine, including the following:

Page type editing forms (Form tab)
Web part and Widget properties
Editing forms of system objects (classes)
Editing forms of Custom tables
On-line forms (only on Portal Engine sites)
Alternative forms
Custom website settings
Report parameters
Macro rule parameters

Form controls are implemented as standard ASP.NET controls using one of the following approaches:

As a user control (.ascx file)
As a control class compiled in an assembly

In both cases, the control class must inherit from the CMS.FormEngine.Web.UI.FormEngineUserControl class.