title: Show loading panel on index action of ASPNET MVC
body: <p>In my ASP.NET MVC 5 web site i have a devexpress navbar with multiple itens, each item have a single unique controller, always when i click on a item the Index action of the corresponding controller is called.</p>
  
  <pre><code>public ActionResult Index()
  {
    //Load large data and return it into a gridview.
  }
  </code></pre>
  
  <p>While im loading this data i would like to show a loading panel but i dont know where i can do it using in mvc, in aspnet webforms its easier to do something like that.</p>
  
  <p>Any MVC expert could help me with this?</p>