<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid">
  <Grid.Resources>
    <Style TargetType="{x:Type xcdg:DataCell}">
      <Setter Property="CurrentForeground">
        <Setter.Value>
          <SolidColorBrush Color="Yellow"/>
        </Setter.Value>
        </Setter>
          <Setter Property="CurrentBackground">
            <Setter.Value>
          <SolidColorBrush Color="Orange"/>
        </Setter.Value>
      </Setter>
    </Style>
    <xcdg:DataGridCollectionViewSource x:Key="cvs_orders"
                                    Source="{Binding Source={x:Static Application.Current},
                                                      Path=Orders}"/>
   </Grid.Resources>
   <xcdg:DataGridControl x:Name="OrdersGrid"
                         ItemsSource="{Binding Source={StaticResource cvs_orders}}"/>
</Grid>