title: How do I filter related Child Record
body: <p>I am using RIA services. I need to select a parent entity (<code>UnitOccupier</code>) which has a number of related child entities(<code>UnitOccupierDetails</code>). I need to filter the child entities to return a single record. How do I do this?</p>
  
  <pre><code>var q = from uo in _unitOccupierContext.GetUnitOccupierQuery()
          where uo.UnitOccupierDetails.????
                                       ---&gt; I cant get to the child properties here
  </code></pre>
  
  <p>Thanks</p>