title: MVC 4 postback on Dropdownlist change
body: <p>I am using MVC4 and I have a menu inside of a layout. part of my menu consists of a dropdown list where a user can select between availiable providers.</p>
  
  <pre><code>&lt;div class="row"&gt;
      &lt;div class="col-md-4"&gt;
      @Html.DropDownListFor(x=&gt; x.usr.DatUsrs.IdProvider, new SelectList(Lista, "Value","Text"))
      &lt;/div&gt;
      &lt;div class="col-md-3"&gt;
        Credit
        @Html.DisplayTextFor(x=&gt; x.usrSelectedProvider.AvailiableCredit)
      &lt;/div&gt;
      &lt;div class="col-md-3"&gt;
        TEXT
      &lt;/div&gt;
      &lt;div class="col-md-2"&gt;
        Closing Day  @Html.DisplayTextFor(m=&gt; m.usrSelectedProvider.ClosingDay)
      &lt;/div&gt;
    &lt;/div&gt;
  </code></pre>
  
  <p>the problem I am having is: when a user changes the selected item in the dropdownlist, I want to make a postback to be able to load the AvailiableCredit and ClosingDay. In webforms i could do this with autopostback, but I haven't found a way to do this in MVC4</p>