protected void rptPublication_ItemCommand(object source, RepeaterCommandEventArgs e)
        {
            switch (e.CommandName)
            {
            case "Delete":
            {
                string confirmValue = Request.Form["confirm_delete"];
                if (confirmValue == "Oui")
                {
                    int         id          = Convert.ToInt32(e.CommandArgument);
                    Publication publication = pf.Get(id);
                    pf.delete(id);
                    try
                    {
                        string FileToDelete = Server.MapPath(publication.url);
                        File.Delete(FileToDelete);
                    }
                    finally
                    {
                        Response.Redirect(Request.RawUrl);
                    }
                }
                break;
            }

            case "Download":
            {
                int         id          = Convert.ToInt32(e.CommandArgument);
                Publication publication = pf.Get(id);
                if (File.Exists(Server.MapPath(publication.url)))
                {
                    Response.ContentType = "Application/pdf";
                    Response.AppendHeader("Content-Disposition", "attachment; filename=" + publication.title + ".pdf");
                    Response.TransmitFile(Server.MapPath(publication.url));
                    Response.End();
                }
                else
                {
                    Response.Redirect(Request.RawUrl + "?erreur=True");
                }
                break;
            }

            default:
            {
                break;
            }
            }
        }
        public void Download_Click(object sender, EventArgs e)
        {
            Button btn = (Button)sender;

            if (btn.CommandName == "download")
            {
                int         pubId       = Int32.Parse(btn.CommandArgument.ToString());
                Publication publication = pf.Get(pubId);
                string      fileName    = publication.title.Replace(" ", "_");
                Response.ContentType = "Application/pdf";
                Response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName + ".pdf");
                Response.TransmitFile(Server.MapPath(publication.url));
            }
        }