ABCpdf .NET PDF Component Documentation - PdfConformityOperation Save Function. Write the conforming PDF document.

using var doc = new Doc();
doc.Read(Server.MapPath("mypics/Acrobat.pdf"));
string path = Server.MapPath("pdfa_save.pdf");
using (var theOperation = new PdfConformityOperation()) {
  theOperation.Conformance = PdfConformance.PdfA1b;
  theOperation.Save(doc, path);

  if (theOperation.Errors.Count > 0) {
    Console.WriteLine("Errors:");
    for (int i = 0; i < theOperation.Errors.Count; ++i)
      Console.WriteLine(theOperation.Errors[i]);
  }
}

Using doc As New Doc()
  doc.Read(Server.MapPath("mypics/Acrobat.pdf"))
  Dim thePath As String = Server.MapPath("pdfa_save.pdf")
  Using theOperation As New PdfConformityOperation()
    theOperation.Conformance = PdfConformance.PdfA1b
    theOperation.Save(doc, thePath)

    If theOperation.Errors.Count > 0 Then
      Console.WriteLine("Errors:")
      Dim i As Integer = 0
      While i < theOperation.Errors.Count
        Console.WriteLine(theOperation.Errors(i))
        System.Threading.Interlocked.Increment(i)
      End While
    End If
  End Using
End Using