ArcGIS Pro 2.8 API Reference Guide
OnLastUnregister Method (AsyncPresentationEvent<TPayload>)

ArcGIS.Core.Events Namespace > AsyncPresentationEvent<TPayload> Class : OnLastUnregister Method
Called when the last subscriber unsubscribes from this event.
Syntax
protected virtual void OnLastUnregister()
Protected Overridable Sub OnLastUnregister() 
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

AsyncPresentationEvent<TPayload> Class
AsyncPresentationEvent<TPayload> Members