ArcGIS Pro 2.9 API Reference Guide
Subscribe Method (ViewingModeChangedEvent)

ArcGIS.Desktop.Mapping.Events Namespace > ViewingModeChangedEvent Class : Subscribe Method
The delegate that gets executed when the event is published.
When false the ArcGIS.Core.Events.CompositePresentationEvent<TPayload> will maintain a weak delegate reference to the subscriber. Using a weak delegate reference relieves the subscriber from the need to unsubscribe to enable proper garbage collection.
Subscribe to the ActiveMapViewChangedEvent.
Syntax

Parameters

action
The delegate that gets executed when the event is published.
keepSubscriberAlive
When false the ArcGIS.Core.Events.CompositePresentationEvent<TPayload> will maintain a weak delegate reference to the subscriber. Using a weak delegate reference relieves the subscriber from the need to unsubscribe to enable proper garbage collection.

Return Value

A ArcGIS.Core.Events.SubscriptionToken that uniquely identifies the added subscription.
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

See Also

Reference

ViewingModeChangedEvent Class
ViewingModeChangedEvent Members