Register Method—ArcGIS Pro

Subscribes a delegate to an event that will be published on the publisher thread. AsyncPresentationEvent<TPayload> will maintain a to the target of the supplied delegate.

Syntax

C#
Visual Basic (Declaration)

public SubscriptionToken Register( 
   Func<TPayload,Task> action,
   bool keepSubscriberAlive
)

Public Function Register( _
   ByVal action As Func(Of TPayload,Task), _
   Optional ByVal keepSubscriberAlive As Boolean _
) As SubscriptionToken

Parameters

action: The delegate that gets executed when the event is published.
keepSubscriberAlive: Set to true to maintain a strong reference

Return Value

A SubscriptionToken that uniquely identifies the added subscription.

Exceptions

Exception	Description
System.ArgumentNullException	action

Remarks

The AsyncPresentationEvent collection is thread-safe.

Requirements

Target Platforms: Windows 10, Windows 8.1

Reference

AsyncPresentationEvent<TPayload> Class
AsyncPresentationEvent<TPayload> Members
System.WeakReference