title: remove duplicate SelectListItem? distinct
body: <p>good evening
  like I had made ​​my listbox bit more orderly
  now I dubble names in my listbox</p>
  
  <p>How can I fix that they come according to ABC stand and all dubble took out his</p>
  
  <pre><code>Function Index() As ActionResult
      ViewBag.country =
          (from t In db.country _
          Select New SelectListItem() With _
          { _
              .Text = t.Name, _
              .Value = t.countryid _
          }).Distinct().ToList()
  End Function
  @Html.ListBox("country", ViewBag.country)
  </code></pre>
  
  <p>one sample</p>
  
  <p>Before: 1
  Before: 5
  Before: 2
  Before: 3
  Before: 6
  Before: 4
  Before: 4</p>
  
  <p>After: 1
  After: 2
  After: 3
  After: 4
  After: 5
  After: 6</p>
  
  <p>thex elisa9180</p>