ArcGIS Pro 2.6 API Reference Guide
FieldName Property (PieChartRendererDefinition)

ArcGIS.Desktop.Mapping Namespace > PieChartRendererDefinition Class : FieldName Property
Gets and sets the field name to use in determining the overall size of the pie chart (per feature)
Syntax
public string FieldName {get; set;}
Public Property FieldName As String
Remarks
Corresponds to SizeOption of PieChartSizeOptions.Field otherwise it is ignored. If FieldName is not specified for PieChartSizeOptions.Field then the first eligible field in the underlying dataset is used.
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

PieChartRendererDefinition Class
PieChartRendererDefinition Members