Windows Phone 8.1 check if password set else load new page

Question

I Have a very similar situation to this guys question in that I have a Login Page which is my MainPage.xaml file but I have another page called SetPassword.xaml that I want

Answer 1

The solution was simple. To do the navigation I could have done it in either App or MainPage as per my question but the reason the navigation wasn't working was because I was trying to navigate to SetPassword.xaml which was a <ContentDialog> instead of a <Page>.

I feel embarrassed actually that I didn't even check that but hopefully if this happens to someone else they can check that they're actually trying to navigate to a Page and not any other type of element. How sadly foolish of me!

EDIT:

Here's what my OnLaunched in the App.xaml file looks like where I can now do my check and redirect to a different page based on the value being set.

protected override void OnLaunched(LaunchActivatedEventArgs e)
{
    Frame rootFrame = Window.Current.Content as Frame;

    if (rootFrame == null)
    {
        rootFrame = new Frame();
        rootFrame.CacheSize = 1;

        Window.Current.Content = rootFrame;

        // The following checks to see if the value of the password is set and if it is not it redirects to the save password page - else it loads the main page.
        Windows.Storage.ApplicationDataContainer localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
        Windows.Storage.StorageFolder localFolder = Windows.Storage.ApplicationData.Current.LocalFolder;

        if (localSettings.Values["myPassword"] == null)
        {
            rootFrame.Navigate(typeof(SetPassword));
        }
        else
        {
            rootFrame.Navigate(typeof(MainPage));
        }
    }

    if (rootFrame.Content == null)
    {
        if (rootFrame.ContentTransitions != null)
        {
            this.transitions = new TransitionCollection();
            foreach (var c in rootFrame.ContentTransitions)
            {
                this.transitions.Add(c);
            }
        }

        rootFrame.ContentTransitions = null;
        rootFrame.Navigated += this.RootFrame_FirstNavigated;

        if (!rootFrame.Navigate(typeof(MainPage), e.Arguments))
        {
            throw new Exception("Failed to create initial page");
        }
    }

    Window.Current.Activate();
}