PDFsharp & MigraDoc Foundation

I'm trying to create and ADA compliant pdf
by exporting a gridvew to pdf. See code below.
Response.ClearContent();
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", string.Format("attachment;filename={0}", "AdminExpenditures.pdf"));
Response.Cache.SetCacheability(HttpCacheability.NoCache);
// setting some response headers
Response.Headers.Set("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
Response.Headers.Set("Expires", "0");
Response.Headers.Set("Pragma", "public");

StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
gvGridView.DataBind();
gvGridView.AllowPaging = false;
gvGridView.RenderControl(hw);
gvGridView.UseAccessibleHeader = true;
StringReader sr = new StringReader(sw.ToString());
iTextSharp.text.Document pdfDoc = new iTextSharp.text.Document(PageSize.A2, 10f, 10f, 10f, 0f);
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
iTextSharp.text.pdf.PdfWriter pw = iTextSharp.text.pdf.PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pw.PdfVersion = iTextSharp.text.pdf.PdfWriter.VERSION_1_7;
pw.SetTagged();
pw.UserProperties = true;
pdfDoc.Open();

//PdfDictionary dict = new PdfDictionary();
//dict.Put(PdfName.LANG, new PdfString("en-us"));
//pw.DirectContent.BeginMarkedContentSequence(PdfName.FIGURE, dict, true);

pdfDoc.AddTitle("SUMMARY OF EXPENDITURES");
pdfDoc.AddAuthor("OPEN BOE");
pdfDoc.AddCreator("Board of Equalization");
pdfDoc.AddKeywords("Open Data Portal");
pdfDoc.AddSubject("SUMMARY OF EXPENDITURES");
pdfDoc.AddLanguage("English");
pdfDoc.AddHeader("Header", "SUMMARY OF EXPENDITURES");
htmlparser.Parse(sr);
//pw.DirectContent.EndMarkedContentSequence();
pw.Flush();
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();

This fails both Title and Headers when I check Accessability with Adobe Acrobat Pro

This is the PDFsharp forum, not the iTextSharp forum.

_________________
Regards
Thomas Hoevel
PDFsharp Team