ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / ProportionalRendererDefinition Class / NullValueSymbol Property
Version

NullValueSymbol Property (ProportionalRendererDefinition)
Gets or sets the symbol used in the renderer to draw features with null values.
Syntax
public CIMSymbolReference NullValueSymbol {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also