Detail row for your WPF DataGrid with ADO.NET DataService binding

Using GridViewRow template and simple trigger you can define, style and show details for every data row in your RadGridView very easily: 

    <Style TargetType="{x:Type telerik:GridViewRow}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type telerik:GridViewRow}">
                     <!--Your template goes here -->
                <ControlTemplate.Triggers> 
                   <MultiTrigger> 
                      <MultiTrigger.Conditions> 
                         <Condition Property="IsSelected" Value="True" /> 
                         <Condition Property="IsCurrent" Value="True" /> 
                      </MultiTrigger.Conditions> 
                      <SetterProperty="Visibility" TargetName="GroupBox" Value="Visible" /> ...