use itextsharp.dll
use this method
public void WritePDF()
{
switch (FileType)
{
case "PDF":
{
try
{
StringWriter sw = new StringWriter();
System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(sw);
System.Web.UI.HtmlControls.HtmlForm frm = new System.Web.UI.HtmlControls.HtmlForm();
HttpContext.Current.Response.ContentType = "application/pdf";
HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=Export.pdf");
HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
GV.Parent.Controls.Add(frm);
frm.Attributes["runat"] = "server";
frm.Controls.Add(GV);
frm.RenderControl(hw);
StringReader sr = new StringReader(sw.ToString());
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
PdfWriter.GetInstance(pdfDoc, HttpContext.Current.Response.OutputStream);
pdfDoc.Open();
htmlparser.Parse(sr);
pdfDoc.Close();
HttpContext.Current.Response.Write(pdfDoc);
HttpContext.Current.Response.End();
}
catch (Exception f)
{
}
break;
}
case "Word":
{
HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=Export.doc");
HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
HttpContext.Current.Response.ContentType = "application/vnd.word";
StringWriter stringWrite = new StringWriter();
System.Web.UI.HtmlTextWriter htmlWrite = new System.Web.UI.HtmlTextWriter(stringWrite);
System.Web.UI.HtmlControls.HtmlForm frm = new System.Web.UI.HtmlControls.HtmlForm();
GV.Parent.Controls.Add(frm);
frm.Attributes["runat"] = "server";
frm.Controls.Add(GV);
frm.RenderControl(htmlWrite);
HttpContext.Current.Response.Write(stringWrite.ToString());
HttpContext.Current.Response.End();
break;
}
case "Excel":
{
try
{
string attachment = "attachment; filename=Export.xls";
HttpContext.Current.Response.ClearContent();
HttpContext.Current.Response.AddHeader("content-disposition", attachment);
HttpContext.Current.Response.ContentType = "application/ms-excel";
StringWriter sw = new StringWriter();
System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);
System.Web.UI.HtmlControls.HtmlForm frm = new System.Web.UI.HtmlControls.HtmlForm();
GV.Parent.Controls.Add(frm);
frm.Attributes["runat"] = "server";
frm.Controls.Add(GV);
frm.RenderControl(htw);
HttpContext.Current.Response.Write(sw.ToString());
HttpContext.Current.Response.End();
}
catch (Exception f)
{
}
break;
}
}
}