Export GridView Data into PDF file

Question

I   want to Export grid view data into pdf but only Header & Footer  Description is coming.

my Code is below:-> 

 

Response.ContentType = "application/pdf";

Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.pdf");

Response.Cache.SetCacheability(HttpCacheability.NoCache);

StringWriter swr = new StringWriter();

HtmlTextWriter htmlwr = new HtmlTextWriter(swr);

grdReports.AllowPaging = false;

BindgrvReports();

grdReports.RenderControl(htmlwr);

StringReader srr = new StringReader(swr.ToString());

Document pdfdoc = new Document(PageSize.A2, 10f, 10f, 10f, 0f);

HTMLWorker htmlparser = new HTMLWorker(pdfdoc);

PdfWriter.GetInstance(pdfdoc, Response.OutputStream);

pdfdoc.Open();

htmlparser.Parse(srr);

pdfdoc.Close();

Response.Write(pdfdoc);

Response.End();