ArcGIS Pro 2.8 API Reference Guide
AddOverlayAsync(MapView,CIMGraphic,Double) Method

ArcGIS.Desktop.Mapping Namespace > MappingExtensions Class > AddOverlayAsync Method : AddOverlayAsync(MapView,CIMGraphic,Double) Method
The view to add the overlay.
The graphic to be added to the overlay.
Map reference scale or -1
Add an overlay graphic to the map view.
Syntax
Public Overloads Shared Function AddOverlayAsync( _
   ByVal mapView As MapView, _
   ByVal graphic As CIMGraphic, _
   ByVal referenceScale As Double _
) As Task(Of IDisposable)

Parameters

mapView
The view to add the overlay.
graphic
The graphic to be added to 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 10, Windows 8.1

See Also

Reference

MappingExtensions Class
MappingExtensions Members
Overload List