pdf is not showing correct hindi.

Question

I am  using  itextsharp.dll   hindi  in pdf is not showing correctly.

 

 

 

Code

 

HttpResponse response = HttpContext.Current.Response;
         response.Clear();
         response.Buffer = true;
         response.Charset = "";
         response.Cache.SetCacheability(HttpCacheability.NoCache);
         response.ContentType = "application/octet-stream";

         response.AddHeader("Content-Disposition", "attachment;filename=Service_History.pdf");
         response.ContentEncoding = System.Text.Encoding.Unicode;
         Document document = new Document();
         PdfWriter.GetInstance(document, response.OutputStream);
         document.Open();
         using (StringWriter sw = new StringWriter())
         {
             using (HtmlTextWriter htw = new HtmlTextWriter(sw))
             {
                 StringReader sr = new StringReader(sw.ToString());
                 iTextSharp.text.Document pdfDoc = new Document(PageSize.A4, 60f, 60f, 50f, 10f);
                 HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
                 PdfWriter.GetInstance(pdfDoc, response.OutputStream);
                 pdfDoc.Open();
                 // BaseFont bf = BaseFont.CreateFont(Environment.GetEnvironmentVariable("windir") + @"\fonts\Utsaah.TTF", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
                 // BaseFont bf = BaseFont.CreateFont(Environment.GetEnvironmentVariable("windir") + @"\fonts\Mangal.TTF", BaseFont.IDENTITY_H, true);

                 BaseFont bf = BaseFont.CreateFont(Environment.GetEnvironmentVariable("windir") + @"\fonts\ARIALUNI.TTF", BaseFont.IDENTITY_H, true);
                 PdfPTable table = new PdfPTable(dt_excel.Columns.Count);
                 table.WidthPercentage = 100;
                 table.HorizontalAlignment = 1;