protected void gvDSLoaiKhach_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
LoaiKhachHangDAO lkdao = new LoaiKhachHangDAO();
int autoid = int.Parse(gvDSLoaiKhach.DataKeys[e.RowIndex].Value.ToString());
lkdao.XoaLoaiKhach(autoid);
HienThiDanhSach();
}
