Layout, XAML , Grid , Stack Panel

Win8Layout.xaml

<Page
    x:Class="App4.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:App4"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Grid x:Name="layoutGrid" Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
        <!--Design the Layout of the Grid first-->
        <Grid.RowDefinitions>
            <RowDefinition Height="140" />
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>            
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="2*" />
            <ColumnDefinition Width="3*" />
        </Grid.ColumnDefinitions>
        
        <!--Elements of the grid
            Use Attatched property to define the position of child element to the parent element     
        -->
        <TextBlock Text="Hello World"  Grid.Row="1" Grid.Column="1" FontSize="20" HorizontalAlignment="Right"  Margin="0,20,70,0" />
        
        <Grid Grid.Row="2" Grid.Column="1" >
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>
            
            <TextBlock Text="Name" Grid.Column="0"  />
            <TextBox Grid.Column="1"  />
            <TextBlock Text="Address" Grid.Row="1" Grid.Column="0"  />
            <TextBox Grid.Column="1" Grid.Row="1" />

        </Grid>

        <StackPanel Grid.Row="2" Grid.Column="2" Orientation="Horizontal" VerticalAlignment="Top" >
            <Button Content="Button 1" />
            <Button Content="Button 1" />
            <Button Content="Button 1" />
        </StackPanel>
    </Grid>
</Page