title: Dropdownlist onchange action
body: <p>In my view there is this <code>DropDownList</code>: </p>
  
  <pre><code>@Html.DropDownList("fOrderstatus", TryCast( ViewBag.StatusOptions, SelectList), "--pick--",  New With { .title="Pick an orderstatus"} )
  </code></pre>
  
  <p>The view shows purchaseorders and the dropdownlist should give the user the possibility to filter, e.g. choosing only 'active' orders.</p>
  
  <p>I prefer a solution in plain vanilla ASP.NET MVC.</p>
  
  <p>In old skool ASP classic I would have an <code>onchange=submit</code> in the SELECT and in the called ASP (via the FORM action) a <code>Request.Form([name of the SELECT])</code>...</p>