title: how to fill 2nd combobox with asp.net mvc ajax
body: <p>I am using aspnet MVC 5 in Visual Studio 2014.1
  I have a combobox that is filled with data from the database:</p>
  
  <pre><code>ViewBag.Brans = new SelectList(db.Brans.OrderBy(m =&gt; m.Ad), "No", "Ad");
  @Html.DropDownList("Brans", null, htmlAttributes: new { @class = "form-control" })
  </code></pre>
  
  <p>Then i have another combobox. and i want to fill that combobox after i select an option from first combo. 
  Its like selecting country from the first combo. then cities will appear in the second one. </p>
  
  <p>Does any of you know how to do this?</p>