private void OpenUpdatePop(int seqNo) { try { if (!IsClicked) { _commonFun.AlertLongText("已结束的任务不能再设置"); return; } Device.BeginInvokeOnMainThread(async() => { await PopupNavigation.PushAsync(new UpdatePopPage(SystemList.FirstOrDefault(p => p.SeqNo == seqNo)), true); }); } catch (Exception) { _commonFun.AlertLongText("操作异常,请重试。-->SystemListViewModel"); return; } }