ArcGIS Pro 2.7 API Reference Guide
SetReferenceScale Method

ArcGIS.Desktop.Mapping Namespace > Map Class : SetReferenceScale Method
A double represents the reference scale of the map.
Updates the reference scale of the map. This method must be called on the MCT. Use QueuedTask.Run
Syntax
public void SetReferenceScale( 
   double referenceScale
)
Public Sub SetReferenceScale( _
   ByVal referenceScale As Double _
) 

Parameters

referenceScale
A double represents the reference scale of the map.
Exceptions
ExceptionDescription
This method or property must be called within the lambda passed to QueuedTask.Run.
Remarks
When reference scale is set and a FeatureLayer's ScaleSymbols property is set to true, symbol size will get larger if you zoom in to a scale larger than the ReferenceScale and smaller if you zoom out to a scale smaller than the ReferenceScale.
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

Map Class
Map Members