ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMCustomNumberFormat Class / FormatString Property

FormatString Property
Gets or sets the format string (e.g. ###-##-####).
Syntax
public string FormatString {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also