Visual Layer - ElementCompositionPreview

MainPage.xaml

<Page
    x:Class="XamlComposition.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:XamlComposition"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
        <Image x:Name="image" Source="Assets/windowscube.jpg" Stretch="Uniform" />
    </Grid>
</Page>