ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Mapping.Events Namespace / ElevationSurfaceLayerCollectionChangedEventArgs Class / Sender Property

Sender Property
Gets the sender.
Syntax
public object Sender {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 3.0 or higher.
See Also