如何访问行以访问XtraGrid CardView DevExpress中的记录

Question

我有一个网格控件设置与主 - 细节关系，但我想知道如何访问详细视图记录或行来执行编辑或更新信息。我试过这个但是它没有用，它返回0到表单：

void AddPayment_Click(object sender, EventArgs e) {
    Paymentfrm payent = new Paymentfrm(Utils.Formtype.add, 0);
    payent.PaymentEvent += new EventHandler(RefreshingGrid);
    payent.PayentlabelsEvent += new EventHandler(RefresHlabels);

    gridView1.ViewCaption = " Lessee Payment ";
    CardView card = new CardView(DgPaymentYW);
    DgPaymentYW.LevelTree.Nodes.Add("LesseePayments", card);

    card.ViewCaption = " Lessee Payments";
    GetPayment.TotalPrice = Convert.ToDecimal(card.GetFocusedRowCellValue("TotalPrice"));


    payent.ShowDialog();
}