protected void btnLuu_Click(object sender, EventArgs e)
        {
            string maloaiphieu = DropDownLoaiPhieu.SelectedValue.ToString();
            string congty      = DropCty.SelectedValue.ToString();
            int    buocky      = int.Parse(txtBuocky.Text);
            int    nhomky      = int.Parse(txtNhomKy.Text);;
            bool   kytoanbo    = true;

            if (rbKyToanBo.Checked == true)
            {
                kytoanbo = true;
            }
            else
            {
                kytoanbo = false;
            }
            //ChiTietLoaiKy chi= ChiTietLoaiKyBUS.LayBuocKy(int.Parse(txtBuocky.Text),int.Parse(txtBuocky.Text), maloaiphieu);
            //if (chi == null)
            //{
            //    nhomky = int.Parse(txtBuocky.Text);
            //}
            //else
            //{
            //    if (int.Parse(txtBuocky.Text) == chi.abstep)
            //    {
            //        nhomky = int.Parse(chi.abstep.ToString()) + 1;
            //    }
            //    else
            //    {
            //        nhomky = int.Parse(txtBuocky.Text);
            //    }
            //}
            ChiTietLoaiKy chitiet = new ChiTietLoaiKy();

            chitiet.GSBH     = congty;
            chitiet.abtype   = maloaiphieu;
            chitiet.abstep   = buocky;
            chitiet.Nhom     = nhomky;
            chitiet.KyToanBo = kytoanbo;
            ChiTietLoaiKyBUS.ThemChiTietLoaiKy(chitiet);

            HienThiDanhSach();
        }
 private void HienThiDanhSach()
 {
     GridView1.DataSource = ChiTietLoaiKyBUS.LayDanhSachChiTietLoaiKy();
     GridView1.DataBind();
 }