ArcGIS Pro 2.9 API Reference Guide
OnFirstRegister Method (BeforeSketchCompletedEvent)

ArcGIS.Desktop.Mapping.Events Namespace > BeforeSketchCompletedEvent Class : OnFirstRegister Method
Called when the first subscriber subscribes to this event.
Syntax
protected override void OnFirstRegister()
Protected Overrides NotOverridable Sub OnFirstRegister() 
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

See Also

Reference

BeforeSketchCompletedEvent Class
BeforeSketchCompletedEvent Members