private void UpdateNameAndAddressAndDetail(KHACHHANG KhachHang)
        {
            if (KhachHang is null)
            {
                throw new System.ArgumentNullException(nameof(KhachHang));
            }

            using (var db = new QUANLYNHADATEntities())
            {
                try
                {
                    db.USP_UpdateCustomerDetail(KhachHang.MAKH, KhachHang.CNQUANLY, KhachHang.TEN, KhachHang.DIACHI, KhachHang.CHITIET);
                    db.SaveChanges();
                    this.Reset();
                }
                catch (System.Exception ex)
                {
                    MessageBox.Show(ex.ToString());
                }
            }
        }