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;
}
}
}