ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMTextSymbol Class / Underline Property

Underline Property (CIMTextSymbol)
Gets or sets a value indicating whether to draw the text with an underline.
Syntax
public bool Underline {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also