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    <p>I've been planning on writing <a href="http://blogs.msdn.com/alexj/archive/2009/03/26/index-of-tips.aspx" rel="noreferrer">a tip</a> on this but your question beat me to the punch.</p> <p>Assuming a <code>WorkItem</code> has many <code>WorkItemNotes</code></p> <p>you can do this:</p> <pre><code>var intermediary = (from item in ctx.WorkItems from note in item.Notes where note.SomeProp == SomeValue select new {item, note}).AsEnumerable(); </code></pre> <p>This produces an anonymous element for each <code>WorkItemNote</code> that matches, and holds the corresponding <code>WorkItem</code> too.</p> <p>EF identity resolution insures that the same <code>WorkItem</code> (by reference) is returned multiple times if it has multiple <code>WorkItemNotes</code> that match the criteria.</p> <p>I assume that next you want to just get back to just the <code>WorkItems</code>, like this:</p> <pre><code>var workItems = intermediary.Select(x =&gt; x.item).Distinct().ToList(); </code></pre> <p>Then if you now do this:</p> <pre><code>foreach(var workItem in workItems) { Console.WriteLine(workItem.Notes.Count) } </code></pre> <p>You will see that <code>WorkItemNotes</code> that match the original filter have been added to the Notes collection of each <code>workItem</code>. </p> <p>This is because of something called Relationship Fixup.</p> <p>I.e. this gives you what you want conditional include.</p> <p>Hope this helps</p> <p><a href="http://twitter.com/adjames" rel="noreferrer">Alex</a></p>
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    1. COReally? x.Item will have the appropriate WorkItemNotes? That's awesome! I'm glad you posted this because what I currently have queries the db for every WorkItem. Thanks!
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    2. COOne question: Why does intermediary have to be IEnumerable? Can it be IQueryable?
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    3. COYeap this works. You can use this for other tricks too, like sorting, see Tip 1 of my tips series!
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