xamarin-forms-samples/UserInterface/Layout/RelativeLayoutDemos/RelativeLayoutDemos.UWP/MainPage.xaml.cs

namespace RelativeLayoutDemos.UWP
{
    public sealed partial class MainPage
    {
        public MainPage()
        {
            this.InitializeComponent();
            this.LoadApplication(new RelativeLayoutDemos.App());
        }
    }
}