private void button1_Click(object sender, EventArgs e)
        {
            errProdive.Clear();
            if (checkRatio())
            {
                return;
            }
            MaKhuyenMai Target     = GetCodes();
            var         CodetoEdit = _service.getCodes(Target.MaKM);

            if (CodetoEdit == null)
            {
                _service.CreateCode(Target);
            }
            else
            {
                _service.UpdateCode(Target);
            }
            View();
            ViewErrors();
        }