Downloading a excel File with a Save As Dialog in c#

Question

i am creating an excel file generate on button click.but after button click their is no display on popup box.

i  think jquery file conflict..but their is no jquery file is calling or adding.

 this is my code ..

 

protected void btnGenerate_Click(object sender, EventArgs e)

{

DataTable dt = new DataTable();

gvd_details.DataSource = ex.Getadmindtals(name.SelectedValue);

gvd_details.DataBind();

GridView gv = new GridView();

gv.DataSource = gvd_details.DataSource;

gv.DataBind();

Response.Clear();

Response.AddHeader("content-disposition", "attachment;filename=Details.xls");

string path = Server.MapPath("files\\");

Response.ContentType = "application/vnd.ms-excel";

Response.AppendHeader("content-disposition", "attachment;filename=Details.xls");

StringWriter sw = new StringWriter();

HtmlTextWriter hw = new HtmlTextWriter(sw);

gv.RenderControl(hw);

Response.Output.Write(sw.ToString());

Response.End();

}

 

plz help me..!! thnkx in adv..