ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / MappingExtensions Class / AddOverlayAsync Method / AddOverlayAsync(MapView,Layer,Int64,CIMSymbolReference,Double) Method
The view to add the overlay.
The layer containing the feature.
The ObjectID for the feature.
The symbol to use for the overlay.
Map reference scale or -1
Version

AddOverlayAsync(MapView,Layer,Int64,CIMSymbolReference,Double) Method
Add an overlay graphic for a feature on the map view. This is only supported in 2D.
Syntax

Parameters

mapView
The view to add the overlay.
layer
The layer containing the feature.
oid
The ObjectID for the feature.
symbol
The symbol to use for the overlay.
referenceScale
Map reference scale or -1

Return Value

An object that when disposed will remove the overlay.
Remarks
When the referenceScale is not equal to -1, the overlay will be created in real world units relative to the provided map reference scale (referenceScale). Otherwise, the overlay will be created in units of points. This is only supported in 2D.
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also