title: Html to pdf some characters are missing (itextsharp)
body: <p>I want to export gridview to pdf by using the itextsharp library. The problem is that some turkish characters such as İ,ı,Ş,ş etc... are missing in the pdf document. The code used to export the pdf is:</p>
  
  <pre><code> protected void LinkButtonPdf_Click(object sender, EventArgs e)
      {
          Response.ContentType = "application/pdf";
          Response.ContentEncoding = System.Text.Encoding.UTF8;
          Response.AddHeader("content-disposition", "attachment;filename=FileName.pdf");
          Response.Cache.SetCacheability(HttpCacheability.NoCache);
          System.IO.StringWriter stringWrite = new StringWriter();
          System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
          GridView1.RenderControl(htmlWrite);
          StringReader reader = new StringReader(textConvert(stringWrite.ToString()));
          Document doc = new Document(PageSize.A4);
          HTMLWorker parser = new HTMLWorker(doc);
          PdfWriter.GetInstance(doc, Response.OutputStream);
          doc.Open();
          parser.Parse(reader);
          doc.Close();
      }
      public static string textConvert(string S)
      {
          if (S == null) { return null; }
          try
          {
              System.Text.Encoding encFrom = System.Text.Encoding.UTF8;
              System.Text.Encoding encTo = System.Text.Encoding.UTF8;
              string str = S;
              Byte[] b = encFrom.GetBytes(str);
              return encTo.GetString(b);
          }
          catch { return null; }
      }
  </code></pre>
  
  <p>Note: when I want to insert characters into the pdf document, the missing characters are shown in it. I insert the characters with this code:</p>
  
  <pre><code>   BaseFont bffont = BaseFont.CreateFont("C:\\WINDOWS\\Fonts\\arial.ttf", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
          Font fontozel = new Font(bffont, 12, Font.NORMAL, new Color(0, 0, 0));
          doc.Add(new Paragraph("İİııŞŞşşĞĞğğ", fontozel));
  </code></pre>