ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / TrayButton Class / Initialize Method

Initialize Method (TrayButton)
Invoked straight after construction, and after all DAML settings have been loaded.
Syntax
protected virtual void Initialize()
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 3.0 or higher.
See Also