<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid">

 <Grid.Resources>

    <xcdg:DataGridCollectionViewSource x:Key="cvs_orders"

                                       Source="{Binding Source={x:Static Application.Current}, Path=Products}" >



         <xcdg:DataGridCollectionViewSource.ItemProperties>

            <xcdg:DataGridItemProperty Name="CategoryID"

                                       Title="Category">

               <xcdg:DataGridItemProperty.ForeignKeyDescription>

                  <xcdg:DataTableForeignKeyDescription ItemsSource="{Binding Source={x:Static Application.Current}, Path=Categories}"

                                                       ValuePath="CategoryID"

                                                       DisplayMemberPath="CategoryName" />

               </xcdg:DataGridItemProperty.ForeignKeyDescription>

            </xcdg:DataGridItemProperty>



            <xcdg:DataGridItemProperty Name="SupplierID"

                                       Title="Supplier">

               <xcdg:DataGridItemProperty.ForeignKeyDescription>

                  <xcdg:DataTableForeignKeyDescription ItemsSource="{Binding Source={x:Static Application.Current}, Path=Suppliers}"

                                                       ValuePath="SupplierID"

                                                       DisplayMemberPath="CompanyName" />

               </xcdg:DataGridItemProperty.ForeignKeyDescription>

            </xcdg:DataGridItemProperty>

         </xcdg:DataGridCollectionViewSource.ItemProperties>



      </xcdg:DataGridCollectionViewSource>

 </Grid.Resources>      



 <xcdg:DataGridControl x:Name="OrdersGrid"

                       ItemsSource="{Binding Source={StaticResource cvs_orders}}"

                       AutoCreateForeignKeyConfigurations="True"/>

</Grid>