Model Editor: Customize Application Model Visually

Mar 06, 2026

The Application Model holds metadata that defines the application’s UI and behavior. That metadata is first formed from the business model code. Different modules can then apply their own changes. End users can also modify the Application Model to adjust their work environment.

You can examine and edit the Application Model on any of those layers. For this purpose, use the Model Editor.

This documentation section explains how you can invoke the Model Editor and describes its visual elements and capabilities.

Ways to Invoke the Model Editor
Model Editor Toolbar
Node Tree
Property Grid
Enhanced Editors
Search Pane
Unusable Nodes
Model Editor Settings

Review the Customize Data Display and View Layout section of the XAF Tutorial for practical Model Editor usage scenarios.