title: SelectList formatting for dropdownlist
body: <p>I have a Cars Brand/Models class which contains
  ID
  Car_brand (example: BMW,Audi)
  Car_model (Example: M5, A4)</p>
  
  <p>How can I format selectlist to pass Car_brand+Car_model to dropdownlist?</p>
  
  <pre><code>  @Html.DropDownList("smodelis", new SelectList(ViewBag.Smodel, "model_name", "model_id"), "Modelis", new { @class = "btn btn-default dropdown-toggle"})
  </code></pre>