title: asp.net mvc Html.Listbox - how to add an item manually
body: <p>I am looking for a way to manually add items to html.ListBox in mvc. I want the top item to be "All Items".
  i.e.</p>
  
  <pre><code>All Items
  Item1
  Item2
  Item3
  </code></pre>
  
  <p>I am currently calling:</p>
  
  <pre><code>&lt;%=Html.ListBox("items", Model.Items, new { style = "height:50px;width:100%" })%&gt;
  </code></pre>
  
  <p>I may have to add it in the model when setting up the MultiSelectList, but would be prefer to add this in the controller.</p>
  
  <p>Cheers</p>