ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Core.Events Namespace / ActivePortalChangedEvent Class / Unsubscribe Method
Version

Unsubscribe Method (ActivePortalChangedEvent)
Overload List
OverloadDescription
Removes the first subscriber matching the provided delegate from the subscribers' list..  
Removes the subscriber matching the ArcGIS.Core.Events.SubscriptionToken  
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also