private void MainWindow_OnClosed(object sender, CancelEventArgs e)
        {
            if (!QuartzHelper.GetInstanceScheduler().IsStarted)
            {
                QuartzHelper.GetInstanceScheduler().Shutdown();
                return;
            }
            var result = MessageBox.Show("若后台方案正在执行,方案将被取消,是否退出?", "", MessageBoxButton.YesNo, MessageBoxImage.Information);

            if (result == MessageBoxResult.Yes)
            {
                QuartzHelper.GetInstanceScheduler().Shutdown();
                return;
            }
            e.Cancel = true;
        }