Subscribe Method—ArcGIS Pro

When false the CompositePresentationEvent 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. The default is false.

Subscribe to the ElementsPlacementChangedEvent.

Syntax

C#
Visual Basic (Declaration)

public static SubscriptionToken Subscribe( 
   Action<ElementsUpdatedEventArgs> action,
   bool keepSubscriberAlive
)

Public Shared Function Subscribe( _
   ByVal action As Action(Of ElementsUpdatedEventArgs), _
   Optional ByVal keepSubscriberAlive As Boolean _
) As SubscriptionToken

Parameters

action: The delegate that gets executed when the event is published.
keepSubscriberAlive: When false the CompositePresentationEvent 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. The default is false.

Return Value

A SubscriptionToken that uniquely identifies the added subscription.

Remarks

This event occurs when an element is moved or resized on the page layout or if any of its size and position properties are modified in the Format tab on the ribbon or in the Elements pane.

Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

Reference

ElementsPlacementChangedEvent Class
ElementsPlacementChangedEvent Members