<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>

<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid">
  <Grid.Resources>
    <Style TargetType="{x:Type xcdg:DataCell}">
      <Setter Property="Template">
        <Setter.Value>
          <ControlTemplate TargetType="{x:Type xcdg:DataCell}">
            <Button>
              <Button.Content>
                <ContentPresenter/>
              </Button.Content>
            </Button>
          </ControlTemplate>
        </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>

<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid"
      xmlns:local="clr-namespace:Xceed.Wpf.Documentation"> 
  <Grid.Resources>
    <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}}">
      <xcdg:DataGridControl.Resources>

        <Style x:Key="cell_error" TargetType="{x:Type xcdg:DataCell}">
           <Setter Property="Foreground" Value="Red"/>
        </Style>
      </xcdg:DataGridControl.Resources>      

      <xcdg:DataGridControl.Columns>
        <xcdg:Column FieldName="Freight" CellErrorStyle="{StaticResource cell_error}">
           <xcdg:Column.CellValidationRules>
              <local:ShippingCostValidationRule/>
           </xcdg:Column.CellValidationRules>
        </xcdg:Column>
      </xcdg:DataGridControl.Columns>
   </xcdg:DataGridControl>
</Grid>