inabox/inabox.wpf/DynamicGrid/PDF/DocumentApprovalControl.xaml

<UserControl x:Class="InABox.Wpf.DocumentApprovalControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:InABox.DynamicGrid"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
            <RowDefinition Height="auto"/>
        </Grid.RowDefinitions>
        <ScrollViewer VerticalScrollBarVisibility="Auto" Grid.Row="0">
            <StackPanel x:Name="viewer" Orientation="Vertical" Margin="10"/>
        </ScrollViewer>

        <Border Grid.Row="1" BorderBrush="Gray" BorderThickness="0.5">
            <StackPanel Orientation="Horizontal"  HorizontalAlignment="Right">
                <Button Grid.Column="0" Content="Mark Up" HorizontalAlignment="Right" Height="35" Padding="20, 5, 20, 5" Margin="5" x:Name="markUpButton" Click="MarkUpButton_Click"/>
                <Button Grid.Column="1" Content="Approve" HorizontalAlignment="Right" Height="35" Padding="20, 5, 20, 5" Margin="5" x:Name="approveButton" Click="ApproveButton_Click"/>
                <Button Grid.Column="2" Content="Reject" HorizontalAlignment="Right" Height="35" Padding="20, 5, 20, 5" Margin="5, 5, 15, 5" x:Name="rejectButton" Click="RejectButton_Click"/>
            </StackPanel>
        </Border>
    </Grid>
</UserControl>