title: DropDownListFor in EditorTemplate not selecting value
body: <p>I have an editor template for a custom object. Inside that editor template I use a couple of DropDownListFor helpers. In each of them I specify a unique model property (with the pre-selected value) and the select list containing all the select options.</p>
  
  <p>Example:</p>
  
  <pre><code>&lt;%=Html.DropDownListFor(m =&gt; m.DocumentCategoryType, Model.DocumentCategoryTypeList) %&gt;
  </code></pre>
  
  <p>I know that the option values are being populated (from viewing source) and that my Model is passed in with the correct ID value (DocumentCategoryType).</p>
  
  <p>When the view is rendered, there is no selected item in my dropdown and therefore it defaults to the first (non-selected) value.</p>
  
  <p>Does anyone have any ideas?</p>
  
  <p>Thanks.</p>