private byte[] ConvertHtmlToPdf(StringBuilder sbHtmlText, string testname, string userid)
{
byte[] bPDF = null;
string returnvalue = string.Empty;
returnvalue = Request.PhysicalApplicationPath + "\\Upload\\" + userid + testname + ".pdf";
MemoryStream ms = new MemoryStream();
TextReader txtReader = new StringReader(sbHtmlText.ToString());
// 1: create object of a itextsharp document class
Document doc = new Document(PageSize.A4, 25, 25, 25, 25);
// 2: we create a itextsharp pdfwriter that listens to the document and directs a XML-stream to a file
PdfWriter oPdfWriter = PdfWriter.GetInstance(doc, ms);
// 3: we create a worker parse the document
iTextSharp.text.html.simpleparser.HTMLWorker htmlWorker = new iTextSharp.text.html.simpleparser.HTMLWorker(doc);
// 4: we open document and start the worker on the document
doc.Open();
htmlWorker.StartDocument();
// 5: parse the html into the document
htmlWorker.Parse(txtReader);
// 6: close the document and the worker
htmlWorker.EndDocument();
htmlWorker.Close();
doc.Close();
ms.Close();
bPDF = ms.ToArray();
//System.IO.File.WriteAllBytes(returnvalue, bPDF);
return(bPDF);
}