Invoking particular action on dropdown list selection in MVC

Question

I have a dropdown list in an MVC view. On selection change of dropdown list I want to call specific action method in the controller.

What I have done on view is this :

Answer 1

Like both : D

I propose a mix -I like a lot the jQuery.

$('ddl').change(
 function() {
  // This contains your selected option val
  $(this).val();

// so you can do domething like...
  $.post(
    $(this).val(),
    { Param1: xxxx,
      Param2: xxxx,
      Param3: xxxx },
    function(data) {
     // handle your call here. 'data' contains the response
    } );
}