i found this useful code:

01.public override void VerifyRenderingInServerForm(Control control)
02.    {
03.
04.        /* Verifies that the control is rendered */
05.
06.    }
07.
08.
09.protected void imgbtnpdf_Click(object sender, ImageClickEventArgs e)
10.    {
11.
12.
13.        Response.ContentType = "application/pdf";
14.
15.        Response.AddHeader("content-disposition",
16.
17.            "attachment;filename=GridViewExport.pdf");
18.
19.        Response.Cache.SetCacheability(HttpCacheability.NoCache);
20.
21.        StringWriter sw = new StringWriter();
22.
23.        HtmlTextWriter hw = new HtmlTextWriter(sw);
24.
25.        GridView2.AllowPaging = false;
26.
27.        GridView2.DataBind();
28.
29.        GridView2.RenderControl(hw);
30.
31.        StringReader sr = new StringReader(sw.ToString());
32.
33.        iTextSharp.text.Document pdfDoc = new iTextSharp.text.Document(iTextSharp.text.PageSize.A4, 10f, 10f, 10f, 0f);
34.
35.        HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
36.
37.        PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
38.
39.        pdfDoc.Open();
40.
41.        htmlparser.Parse(sr);
42.
43.        pdfDoc.Close();
44.
45.        Response.Write(pdfDoc);
46.
47.        Response.End();
48.
49.

and i'm getting this error  RegisterForEventValidation can only be called during Render();

     i cant disable validation method at page drectives, so how can i solve this? where is the bug here?.....i use itextsharp 5.0.5

This will export the gridview with the associated images?