Refreshing Content of the Table using AJAX in ASP.NET MVC (jQuery DataTables and ASP.NET MVC Integration - Part III)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using JQueryDataTables.Models;

namespace JQueryDataTables.Controllers
{
    public class HomeController : Controller
    {
        /// <summary>
        /// Action that handles initiall request and returns empty view
        /// </summary>
        /// <returns>Home/Index view</returns>
        public ActionResult Index()
        {
            return View();
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="param"></param>
        /// <param name="CompanyID"></param>
        /// <returns></returns>
        public ActionResult MasterDetailsAjaxHandler(JQueryDataTableParamModel param, int? CompanyID)
        {

            var employees = DataRepository.GetEmployees();

            //"Business logic" methog that filter employees by the employer id
            var companyEmployees = (from e in employees
                                    where (CompanyID == null || e.CompanyID == CompanyID)
                                    select e).ToList();

            //UI processing logic that filter company employees by name and paginates them
            var filteredEmployees = (from e in companyEmployees
                                     where (param.sSearch == null || e.Name.ToLower().Contains(param.sSearch.ToLower()))
                                     select e).ToList();
            var result = from emp in filteredEmployees.Skip(param.iDisplayStart).Take(param.iDisplayLength)
                         select new[] { Convert.ToString(emp.EmployeeID), emp.Name, emp.Position };

            return Json(new
            {
                sEcho = param.sEcho,
                iTotalRecords = companyEmployees.Count,
                iTotalDisplayRecords = filteredEmployees.Count,
                aaData = result
            },
                        JsonRequestBehavior.AllowGet);
        }


    }
}