title: How to order by column with null values last in entity framework
body: <p>Does anyone know how to return an ordered list of strings with null values last?  I have something like this:</p>
  
  <pre><code>using(var context = new DomainEntities())
  {
      var result = context.Users.OrderBy(u => u.LastName).ThenBy(u => u.FirstName);
  }
  </code></pre>
  
  <p>My problem though is that this query returns null values before non-null values.</p>
  
  <p>Any thoughts?</p>