ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMDateFormat Class / Format Property

Format Property (CIMDateFormat)
Gets or sets the date format string.
Syntax
public string Format {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.8 or higher.
See Also