title: Html.Dropdownlist Disabled/read only
body: <p>How can i manage my dropdownlist disabled / readOnly
  This is my code : </p>
  
  <pre><code>foreach ( var item in Model.TranscriptData.Transcript.Where( s =&gt; s.TermNo == termItem &amp;&amp; s.InsteadOfLessonNo == null ).ToList() )
  {
      @Html.DropDownList("LetterGradeValue", new SelectList(grade, "Value", "LetterGrade", string.Format("{0};{1};{2}", coefficient, letterGradeTypeId, letterGrade)), "-", new { @onchange = "ChangeValues(" + counter + ");", @class = counter })
  }
  </code></pre>