private void LoadGrid()
        {
            data = new dtGio();
            gridDanhSach.DataSource = data.DanhSach();
            gridDanhSach.DataBind();

            dtLichSuTruyCap.ThemLichSu(Session["IDChiNhanh"].ToString(), Session["IDNhom"].ToString(), Session["IDNhanVien"].ToString(), "Quản lý giờ", "Truy cập");
        }
 private void LoadGrid()
 {
     data = new dtGio();
     gridDanhSach.DataSource = data.DanhSach();
     gridDanhSach.DataBind();
 }