protected void btn_Them_Click(object sender, EventArgs e)
        {
            string   type_name = txtName.Text;
            int      type_pos  = Convert.ToInt32(txt_pos.Text);
            DateTime modified  = DateTime.Parse(txt_Ngay.Text);
            int      status    = Convert.ToInt32(txt_status.Text);
            string   username  = txt_username.Text;
            string   path      = Server.MapPath("~/admin/img/");
            string   filename  = FileUpload1.FileName;

            FileUpload1.SaveAs(path + filename);

            FoodType food = new FoodType(type_name, type_pos, filename, status, username, modified);

            if (food.AddFoodType())
            {
                ClientScript.RegisterStartupScript(this.GetType(), "randomkey", "alertSuccess()", true);
            }
            else
            {
            }
        }