How to set Supported orientations property in Windows Phone 8.1

Question

I wrote an application for WP 8 some time ago, I\'m currently working on updating it for WP 8.1.

My XAML and C#-skills have improved a lot since the initial launch,

Answer 1

You could do this if you wanted just portrait

DisplayInformation.AutoRotationPreferences = DisplayOrientations.Portrait;

Or this if you wanted Portrait and Landscape

DisplayInformation.AutoRotationPreferences = DisplayOrientations.Portrait | DisplayOrientations.Landscape;

Or if you wanted just Landscape and Landscape Flipped

DisplayInformation.AutoRotationPreferences = DisplayOrientations.LandscapeFlipped | DisplayOrientations.Landscape;

etc. on every page, so you can enable/disable orientations depending on the page and how you intend to use it. You can set it in OnNavigatedTo event handler for example.

protected override void OnNavigatedTo(NavigationEventArgs e)
{
    DisplayInformation.AutoRotationPreferences = DisplayOrientations.LandscapeFlipped | DisplayOrientations.Landscape;

    this.navigationHelper.OnNavigatedTo(e);
}

Read more about DisplayInformation.AutoRotationPreferences here.