Asp.net mvc dropdownlist add items on scrolling

Question

I am looking for asp.net mvc dropdown list which can adds records if scrollbar is scrolled. I am completely beginner to this area. Could some one guide me on how to implement th

Answer 1

Jquery Code

Below is the Code for using ajax call to controller and get records then bind into to dropdown

var mySelect = $('#mySelect');
 var sIndex = 11, offSet = 10, isPreviousEventComplete = true, isDataAvailable = true;

    mySelect.scroll(function (e) {
   if($(this).scrollTop() + $(this).innerHeight()>=$(this)[0].scrollHeight)
   {   
       var scrollto=$(this).scrollTop();
       if (isPreviousEventComplete && isDataAvailable) {       
          isPreviousEventComplete = false;
        $(".LoaderImage").css("display", "block");

        $.ajax({
          type: "GET",
          url: 'Your url',
          success: function (result) {
                   $.each(result, function(val, text) {            
    mySelect.append(
        $('').val(val).html(text)
    );
        });
           mySelect.scrollTop( scrollto );

            isPreviousEventComplete = true;

            if (result == '') //When data is not available
                isDataAvailable = false;

            $(".LoaderImage").css("display", "none");
          },
          error: function (error) {
              alert(error);
          }
        });


      }
               }
    });

Click Demo Link http://jsfiddle.net/sethuramanP/4pmKf/3/ example for add static data to dropdown whenever scroll comes end