https://learn.microsoft.com/en-us/dotnet/api/system.componentmodel.dataannotations.displayformatattribute.dataformatstring?view=netframework-4.8.1&viewFallbackFrom=net-6.0
DisplayFormatAttribute.DataFormatString Property (System.ComponentModel.DataAnnotations) |...
Gets or sets the display format for the field value.
property systemdataannotations