PdfValidationOperation Conformance Property. The PDF conformance. ABCpdf .NET PDF Library. From ABCpdf .net previous page next page Conformance Property Type Default Read Only Description [C#]PdfConformance[Visual Basic]PdfConformance Pdf No The PDF conformance. Notes This property specifies the conformance for validation. It can take any of the following values: Pdf – PDF. PdfA1b – PDF/A-1b. PdfA1a – PDF/A-1a. Example See the Read method. previous page start next page