Getting error to generate pdf - asp.net

Question

protected void txt_btn_Click(object sender, EventArgs e)
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=TestResult.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringBuilder htmlText = new StringBuilder();
htmlText.Append("<table style='color:red;' border='1'><tr><th>createing pdf</th><tr><td> abcdef</td></tr></table>");
StringReader stringReader = new StringReader(htmlText.ToString());
Document doc = new Document(PageSize.A4);
List<iTextSharp.text.IElement> elements =
iTextSharp.text.html.simpleparser.HTMLWorker.ParseToList(stringReader, null);
doc.Open();
foreach (object item in elements)
{
doc.Add((IElement)item);
}
doc.Close();
// Response Output
PdfWriter.GetInstance(doc, Response.OutputStream);
doc.Open();
//doc.Close();
Response.Write("PDF is created");
}
}
I am try to create pdf file.But pdf is created only 0kb.Mean when i open this it's shw error that May be pdf damaged

Answer 1

I'm assuming that you are using iTextSharp library.
private void GeneratePDF()
{
try
{
string pdfPath = "~/PDF/File_1.pdf";
StringBuilder sb = new StringBuilder();
sb.Append("Name : chamara" + Environment.NewLine);
sb.Append("Address : sri lanaka" + Environment.NewLine);
sb.Append("Institute : SLIIT" + Environment.NewLine);
Document doc = new Document();
PdfWriter.GetInstance(doc, new FileStream(Server.MapPath(pdfPath), FileMode.Create));
doc.Open();
doc.Add(new Paragraph(sb.ToString()));
doc.Close();
}
catch (Exception ex)
{
throw ex;
}
}