Drawing Html String Content in Pdf File

string table1 = GetHtmlPage(MY HTML CODE);
       StringReader reader = new StringReader(table1);
       Document document = new Document(PageSize.A4);
       HTMLWorker parser = new HTMLWorker(document);
       string PDF_FileName = Server.MapPath("~") + "/Shopping_cart/billformat/PDF_File.pdf";
       PdfWriter.GetInstance(document, new FileStream(PDF_FileName, FileMode.OpenOrCreate));
       document.Open();
       try
       {
           parser.Parse(reader);
       }
       catch (Exception ex)
       {
           Paragraph paragraph = new Paragraph("Error!" + ex.Message);
           Chunk text = paragraph.Chunks[0] as Chunk;
           if (text != null)
           {
               text.Font.Color = BaseColor.RED;
           }
           document.Add(paragraph);
       }
       finally
       {
           document.Close();
       }