Ooui-tws-port/Samples/XamlPreviewPage.xaml

<?xml version="1.0" encoding="UTF-8"?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class="Samples.XamlPreviewPage">
	<ContentPage.Content>
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="auto" />
                <RowDefinition Height="*" />
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>

            <StackLayout Orientation="Vertical" Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2">
                <Label Text="Xamarin.Forms XAML Editor" FontSize="24" FontAttributes="Bold" Margin="8,8,8,0" />
                <Label Text="Edit the XAML below to see a live preview on the right" Margin="8,0,8,8" />
            </StackLayout>
            <Editor x:Name="editor" FontFamily="monospace" FontSize="12" Grid.Row="1" Grid.Column="0" />
            <ContentView x:Name="results" Grid.Row="1" Grid.Column="1" BackgroundColor="White" />
        </Grid>
	</ContentPage.Content>
</ContentPage>