string Fromfile = Server.MapPath("../../../public/photo/" + rdr["Name"] + "");
                 
        string Tofile = Server.MapPath("../../../public/photo/" + txtTitolo.Text + "");
                        DirectoryInfo folder = new DirectoryInfo(Server.MapPath("../../../public/photo/"));
                        if (folder.Exists)
                        {
                            Directory.Move(Fromfile, Tofile);

                        } Response.Redirect("default.aspx");