font family is not working in PDF

I'm converting HTML to PDF as below:

public const string PdfDocumentHeaderHtml = @"<!DOCTYPE html>
 <html lang='en' xmlns='http://www.w3.org/1999/xhtml'>
  <head>
   <meta charset='utf-16' />
   <title></title>
  </head>
 <body>
  <table>
   <tr>
    <td colspan='3'>
    <span Style='font-family:Arial;font-size:10pt;font-weight:bold;'>{0}</span>
    <br/>
    <br/>
    <span class='pageHeaderText'>{1}</span>
   </td>
   <td colspan='1'>
    <span><img src='' width='150' height='90' alt='NOS'/></span>
   </td>
  </tr>
  </table>
 </body>
</html>";

And save to PDF using the below code:

public override void OnCreatePDF(PdfWriter writer, Document document)
        {
            iTextSharp.text.FontFactory.Register(@"C:\Windows\Fonts\arial.ttf", "Arial");

            base.OnCreatePDF(writer, document); 
            if (writer == null)
                throw new ArgumentNullException("writer");
            if (document == null)
                throw new ArgumentNullException("document");
            var headerHtml = string.Format(Constants.NosPdfDocumentHeaderHtml, Urn, Title);


            var providers = new Dictionary<string, Object> { { HTMLWorker.IMG_BASEURL, string.Format(Constants.HeaderImageLocation, SiteUrlForHeaderImage) } };
            List<IElement> htmlarraylist = HTMLWorker.ParseToList(new StringReader(headerHtml), null, providers);            
            foreach (IElement htmlElement in htmlarraylist)
            {
                document.Add(htmlElement);
                document.Add(new LineSeparator((float)0.90, 100, new BaseColor(0, 112, 192, 0), 0, 0));
            }
        }

I want to set Font-Family:Arial for the PDF but the problem is, when I see the PDF-File properties, it says Helvetica is used.

I think I need to download Adobe Font Metric file (arial.afm file) and set this font family (instead of arial.ttf) for use with pdf. But I don't know how to do it.

Could you please advice?

Thanks,

Solution

In the comment section, you are asking for an alternative to add a table structure to a document.

That's easy with PdfPTable. For instance, if I want to create a table with 3 columns, I do:

  PdfPTable table = new PdfPTable(3);

I want to span 100% of the available width between the margins of the page, so I do:

  table.WidthPercentage  = 100;

I want the first column to be twice as wide as column two and three, so I do:

  table.SetWidths(new int[]{2, 1, 1});

Now I add cells:

PdfPCell cell;
cell = new PdfPCell(new Phrase("Table 1"));
cell.Colspan = 3;
table.AddCell(cell);
cell = new PdfPCell(new Phrase("Cell with rowspan 2"));
cell.Rowspan = 2;
table.AddCell(cell);
table.AddCell("row 1; cell 1");
table.AddCell("row 1; cell 2");
table.AddCell("row 2; cell 1");
table.AddCell("row 2; cell 2");

Finally, I add the table to the Document:

document.Add(table);

And that's it.