<Window x:Class="WpfScrollViewer.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Code Arsenal - ScrollViewer" Height="200" Width="300">

    <Grid Name="one">
        <Grid.RowDefinitions>
            <RowDefinition Height="113*" />
            <RowDefinition Height="48*" />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="184*" />
            <ColumnDefinition Width="94*" />
        </Grid.ColumnDefinitions>
        <StackPanel  Grid.RowSpan="2" MaxHeight="{Binding ElementName=one, Path=ActualHeight}">
        <Expander Name="MyExpander" >
        <ScrollViewer HorizontalScrollBarVisibility="Auto" 
                    VerticalScrollBarVisibility="Auto">
            <StackPanel>
                <DataGrid Name="dataGrid1"
                        Cursor="Hand"
                        ItemsSource="{Binding Employees}" />
            </StackPanel>
        </ScrollViewer>
    </Expander>
            <Expander Name="MyExpande2r">
                <ScrollViewer HorizontalScrollBarVisibility="Auto" 
                    VerticalScrollBarVisibility="Auto">
                    <StackPanel>
                        <DataGrid Name="dataGritd1"
                        Cursor="Hand"
                        ItemsSource="{Binding Employees}" />
                    </StackPanel>
                </ScrollViewer>
            </Expander>
        </StackPanel>
    </Grid>
</Window>