ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMCustomNumberFormat Class / FormatString Property
Version

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

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also