private int UpdateDichVu()
        {
            int kq = 0;
            if (grdMaster.SelectedRows.Count != 0)
            {
                DataGridViewRow row = this.grdMaster.SelectedRows[0];
                string MaDichVu = row.Cells["MaDichVu"].Value.ToString();

                frmDanhMucDichVuChiTiet frmChiTiet = new frmDanhMucDichVuChiTiet();
                frmChiTiet.MaDM = MaDichVu;
                frmChiTiet.ShowDialog();
                LoadGridView();
            }
            return kq;
        }
 private int Insert()
 {
     int kq = 0;
     frmDanhMucDichVuChiTiet frmChiTiet = new frmDanhMucDichVuChiTiet();
     frmChiTiet.ShowDialog();
     LoadGridView();
     return kq;
 }