我正在运行WPF应用程序，它可以在应用程序主屏幕顶部显示窗口和对话框（.NET Framefork 4.7.2） 我使用IWindowManager界面调用ShowWindow和ShowDialog。

当我想显示一些窗口时

Execute.OnUIThread(ShowPostProcessingLoadingMsg);
    private void ShowPostProcessingLoadingMsg()
    {
        Logger.Info("PostProcessingToolViewModel: ShowPostProcessingLoadingMsg()");
        if (_processingProgressMsg != null)
        {
            Logger.Warn("PostProcessingToolViewModel: ShowPostProcessingLoadingMsg() Loading msg was actibe already,closing it and creating a new one.");
            _processingProgressMsg.TryClose();
        }
        _processingProgressMsg = new LoadingMessageViewModel()
        {
            ShowProgressRing = Visibility.Hidden,ShowProgressBar = Visibility.Visible,LoadingVisualState = LoadingVisualState.Mini
        };
        _progress = _processingProgressMsg.Progress;
        _progress?.Report(0);
        _updateProgressText = _processingProgressMsg.SetMessage;
        _WindowManager?.ShowWindow(_processingProgressMsg);
    }

在此期间，我在其他线程上显示一个对话框-

    private void ShowPopupInDesktop(BatteryViewModel batteryPopupViewModel)
    {
        _logger.Info("BatteryViewModel::ShowPopupInDesktop: Going to show battery dialog");
        _isPopupOpen = true;
        SetPopupPosition(batteryPopupViewModel);
        _windowManager.ShowDialog(batteryPopupViewModel,BatteryPopupViewContextName);
    }

然后我显示的窗口消失了。

我不知道如何保持窗口打开以及为什么对话框使它消失。