protected void btnAdd_Click(object sender, EventArgs e)
        {
            string name = "";
            string url  = "";

            SQLTrans.CrudServiceClient client = new SQLTrans.CrudServiceClient();
            try
            {
                if (upload.HasFile)
                {
                    name = clases.Tools.ImgName(upload.FileName, Server.MapPath("~/images/"));
                    url  = "/images/" + name;
                }
                client.sp_AgregarRestaurante((SQLTrans.LoginData)Session["userdata"], txtRname.Text, txtReferencia.Text, url);
                output.Text = "Transaccion completada!";
                if (upload.HasFile)
                {
                    upload.SaveAs(Server.MapPath(Path.Combine("~/images/", name)));
                }
                txtReferencia.Text = "";
                txtRname.Text      = "";
            }
            catch (Exception ex)
            {
                output.Text = "Ocurrio un error y no se completo la transaccion!" + (char)13 + ex.Message;
            }
        }