Design-Time WinRT XAML Binding

MainPage.xaml

<Page
    x:Class="DebugXamlBinding.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:DebugXamlBinding"
    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}"
          d:DataContext="{d:DesignInstance Type=local:MainPageViewModelSample, IsDesignTimeCreatable=True}">
        <TextBlock Text="{Binding Title}" FontSize="42" VerticalAlignment="Center" HorizontalAlignment="Center"/>
    </Grid>
</Page>

MainPageViewModelSample.cs

public class MainPageViewModelSample
{
    public MainPageViewModelSample()
    {
        Title = "Hello Design Time!";
    }
    public string Title { get; set; }
}