ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Editing Namespace / AnnotationProperties Class / FontSize Property
Version

FontSize Property (AnnotationProperties)
Gets and sets the font size.
Syntax
public Nullable<double> FontSize {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also