async void RefreshToolbar()
        {
            var lvitem     = orderList.SelectedItems.OfType <ListViewItem>().FirstOrDefault();
            var lvgroup    = lvitem?.Group;
            var lvGroupObj = lvgroup?.Tag as HbOrderListViewGroup;

            var notCompleteOrder = lvGroupObj?.NotCompleteOrder;
            var orderItem        = lvGroupObj?.Order;
            var need             = (lvitem?.Tag is BackupTrain tmp) ? tmp : null;

            //待支付订单
            btnPay.Enabled = notCompleteOrder != null;
            //取消订单
            btnCancel.Enabled = notCompleteOrder != null || orderItem?.StatusCode < 5;

            //提示
            pMemo.Visible = false;
            if (orderList.Items.Count == 0)
            {
                pMemo.Visible = true;
                lblMemo.Text  = "<font color='gray'><i>没有查询到候补订单</i></font>";
            }
            else if (notCompleteOrder != null)
            {
                pMemo.Visible = true;
                lblMemo.Text  = $"<font color='red'><b>未支付订单,请在 {notCompleteOrder.LoseTime.ToLongTimeString()} 前完成支付</b></font>";
            }
            else if (orderItem?.HasRefundInfo == true)
            {
                pMemo.Visible = true;
                if (orderItem.RefundInfo == null)
                {
                    lblMemo.Text = "<font color='gray'>退款信息正在努力地查询中...</font>";

                    var(ok, msg) = await _service.QueryRefundInfo(orderItem);

                    if (!ok)
                    {
                        lblMemo.Text = $"<font color='red'>查询退款信息失败:<b>{msg}</b></font>";
                    }
                }

                if (orderItem.RefundInfo != null)
                {
                    var    ri = orderItem.RefundInfo;
                    string txt;

                    if (ri.TransAmount > 0)
                    {
                        txt = $"<font color='ForestGreen'>退款金额:</font><font color='Crimson'>{(ri.TransAmount / 100):C}</font><font color='ForestGreen'>,平台流水号:</font><font color='Crimson'>{ri.TransNo}</font><font color='ForestGreen'>,业务流水号:</font><font color='Crimson'>{ri.TradeNo}</font><font color='ForestGreen'>,退款状态:</font>";
                        if (ri.TransStatus == 1)
                        {
                            txt += $"<b><font color='royalblue'>成功</font></b><font color='ForestGreen'>,已成功退至 </font><font color='Crimson'><b>{ParamData.GetBankName(ri.BankCode)}</b></font>";
                        }
                        else if (ri.TransStatus == 2)
                        {
                            txt += $"<b><font color='red'>失败</font></b><font color='ForestGreen'>,请与 </font><font color='Crimson'><b>{ParamData.GetBankName(ri.BankCode)} </b></font><font color='ForestGreen'>联系</font>";
                        }
                        else
                        {
                            txt += "<font color='royalblue'>退款处理中,两周没到账则火速 CALL 12306</font>";
                        }
                    }
                    else
                    {
                        txt = "<font color='royalblue'>退款金额为0,无后续处理</font>";
                    }

                    lblMemo.Text = txt;
                }
            }
        }