<ScrollViewer Margin="0,0,0,0" Width="100" Height="100">
<data:DataGrid Width="100" Height="300" d:LayoutOverrides="Width, Height, HorizontalMargin">
<data:DataGrid.Columns>
<data:DataGridTextColumn Header="Title"/>
</data:DataGrid.Columns>
</data:DataGrid>
</ScrollViewer>