title: Why are there no LINQ extension methods on RepeaterItemCollection despite the fact that it implements IEnumerable?
body: <p>Why are there no LINQ extension methods on RepeaterItemCollection despite the fact that it implements IEnumerable?</p>
  
  <p>I'm using Linq to objects elsewhere in the same class.  However, when I attempt to do so with the RepeaterItemCollection they aren't available.  I was under the impression that the LINQ extension methods were available to classes that implement IEnumerable.</p>
  
  <p>What am I missing?</p>