c# - WpfToolkit DataGrid: Highlight modified rows -

is there way highlight modified rows on datagrid? since grid bound system.data.datatable figured might able bind colour of each row it's rowstate (example below), doesn't seem work.

any ideas?

xmlns:data="clr-namespace:system.data;assembly=system.data"

<style x:key="datagridrowstyle" targettype="{x:type toolkit:datagridrow}">     <style.triggers>         <trigger property="isselected" value="true">             <setter property="background" value="blue" />         </trigger>         <datatrigger binding="{binding rowstate}" value="{x:static data:datarowstate.modified}">             <setter property="background" value="lightyellow" />         </datatrigger>     </style.triggers> </style> 

<datagrid.rowstyle>    <style targettype="datagridrow">      <style.triggers>          <datatrigger binding="{binding rowstate}" value="{x:static data:datarowstate.modified}">              <setter property="background" value="lightyellow" />                     </datatrigger>      </style.triggers>    </style>  </datagrid.rowstyle>  

update
after have posted xaml, it's obvious problem not found in xaml. have shortly looked @ msdn datatable-class , can not see mechanism let wpf detect changes of rowstate-property. therefore, direct binding property not give reliable results.
seems have wrap data items. recommend make viewmodel items , add property says if row has changed change notification (inotifypropertychanged or dp) , bind property. surely there other alternatives, imo creating vm per item in cases best solution.