private async void Button_Click2(object sender, RoutedEventArgs e) { ResultPage.ResultParam param = new ResultPage.ResultParam(); if (AirLineNum.Text == "") { await new ContentDialog { Title = "请填写航班号!", CloseButtonText = "关闭", }.ShowAsync(); return; } param.airLines = DataBase.Instence.QueryAirlineByAirLineNum(AirLineNum.Text); param.type = ResultPage.PageType.AdminSearchPage; DataPresenter.Navigate(Type.GetType("PlaneUWP.ResultPage_AdminMain"), param); }