ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Events Namespace / RegisteredPresentationEvent<TSubscriptionParam,TPayload> Class / OnUnsubscribe Method
This can be ignored.
The subscription token used to unregister
Version

OnUnsubscribe Method
Callback made on the event instance when a subscriber unregisters from the event
Syntax
protected virtual void OnUnsubscribe( 
   TSubscriptionParam param,
   SubscriptionToken token
)

Parameters

param
This can be ignored.
token
The subscription token used to unregister
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also