title: Why does @Html.EnumDropDownListFor add a blank(0) selection when you have numerically defined values for an enum?
body: <p>I have two enums:</p>
  
  <pre><code>public enum AnnouncementType
  {
      All = 1,
      Corporate = 2,
      Franchisee = 3
  }
  
  public enum AnnouncementLevel
  {
      Urgent,
      Normal
  }
  </code></pre>
  
  <p>The first one, when using @Html.EnumDropDownListFor will add a blank option to the top of drop-down.  The second behaves as expected and does not add the blank option.  It has something to do with setting the values of the enum.  Is there a way to get it to behave the same as not having values assigned?</p>