看不到已加载、已初始化、可见 window

Question

Simplified version

1. ParentWindow.ShowDialog()
2. Click default/Bring Up Child Window button in ParentWindow
3. Click event handler for default/Bring Up Child Window button does ParentWindow.Hide()
4. ChildWindow.ShowDialog()
5. Click ChildWindow's cancel/Go Back button
6. ParentWindow.Visibility = Visibility.Visible
7. ParentWindow is nowhere to be found.

I checked, and ParentWindow returns true for IsInitialized , IsLoaded , and IsVisible . I also Alt-Tabbed my way through all my windows to look for it - it's not hiding under anything.

Why can't I see ParentWindow anywhere?

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Full version

1. parseSettingsWindow.ShowDialog()
2. Click default/Bring Up Fix Selector button in parseSettingsWindow
3. Click event handler for default/Bring Up Fix Selector button does: a. ParentWindow.Hide() b. parseSettingsWindow.GoToNextWindow flag set to true (Next window is Fix Selector)
4. while loop does fixSelector.ShowDialog() because it's not yet loaded
5. Click ChildWindow's cancel/Go Back button
6. while loop is entered again, goes to `case "Parse Settings" section
7. parseSettingsWindow.Visibility = Visibility.Visible
8. parseSettingsWindow is nowhere to be found

I checked, and parseSettingsWindow returns true for IsInitialized , IsLoaded , and IsVisible in the Immediate Window when pausing execution on the break; line of the "Parse Settings" while loop section. I also Alt-Tabbed my way through all my windows to look for it - it's not hiding under anything.

Why can't I see parseSettingsWindow anywhere?

---

Main class

    public static bool UserPromptedSettingsWereWrittenToModel(ref Model model, ref ActiveFixes activeFixes, ref ActiveReports activeReports)
    {
        var viewModel = new ViewModel();

        var parseSettingsWindow = new ViewPlusViewModel.ParseSettings();
        parseSettingsWindow.InitializeComponent();

        var fixSelector = new ViewPlusViewModel.FixSelector(viewModel);
        fixSelector.InitializeComponent();

        var seeAllFixesReports = new ViewPlusViewModel.SeeAllFixesReports();
        seeAllFixesReports.InitializeComponent();


        parseSettingsWindow.ShowDialog();
        var nextWindowToOpen = "Fix Selector";


        while (parseSettingsWindow.GoToNextWindow == true && fixSelector.GoToNextWindow == false)
        {
            switch(nextWindowToOpen)
            {
                case "Fix Selector":
                    if (fixSelector.IsLoaded)
                    {
                        fixSelector.Visibility = Visibility.Visible;
                    }
                    else
                    {
                        fixSelector.ShowDialog();
                    }

                    nextWindowToOpen = "Parse Settings";
                    break;
                case "Parse Settings":
                    parseSettingsWindow.GoToNextWindow = false;
                    parseSettingsWindow.Visibility = Visibility.Visible;
                    nextWindowToOpen = "Fix Selector";
                    break;
            }
        }


        if (parseSettingsWindow.GoToNextWindow == false)
        {
            parseSettingsWindow.Close();
            if (fixSelector.IsLoaded) fixSelector.Close();
            if (seeAllFixesReports.IsLoaded) { seeAllFixesReports.Close(); }
            return false;
        }

        parseSettingsWindow.Close();
        fixSelector.Close();
        if (seeAllFixesReports.IsLoaded) { seeAllFixesReports.Close(); }

        return true;
    }

---

ParseSettingsWindow.cs

    private void GoToNextWindow_Click(object sender, RoutedEventArgs e)
    {
        this.GoToNextWindow = true;
        this.Hide();
    }

Answer 1

You can't bring a hidden .ShowDialog() window back again via Window.Visibility . You need to use .ShowDialog() on it again. In addition, any buttons given the IsCancel = True property will no longer have that functionality even when using ShowDialog() again, so presses on that button will need to be handled manually.