how we can sort a jquery data table in asp.net mvc4

$(document).ready(function () {

var oTable = $('#myDataTable').dataTable({
"bServerSide": true,
"sAjaxSource": "Home/AjaxHandler",
"bProcessing": true,
"aoColumns": [
{ "sName": "ID",
"bSearchable": false,
"bSortable": false,
"fnRender": function (oObj) {
return 'View';
}
},
{ "sName": "COMPANY_NAME" },
{ "sName": "ADDRESS" },
{ "sName": "TOWN" }
]
});
});
and controler side code is
public ActionResult AjaxHandler(JQueryDataTableParamModel param)
{
var allCompanies = DataRepository.GetCompanies();
IEnumerable<company> filteredCompanies;
//Check whether the companies should be filtered by keyword
if (!string.IsNullOrEmpty(param.sSearch))
{
//Used if particulare columns are filtered
var nameFilter = Convert.ToString(Request["sSearch_1"]);
var addressFilter = Convert.ToString(Request["sSearch_2"]);
var townFilter = Convert.ToString(Request["sSearch_3"]);

//Optionally check whether the columns are searchable at all
var isNameSearchable = Convert.ToBoolean(Request["bSearchable_1"]);
var isAddressSearchable = Convert.ToBoolean(Request["bSearchable_2"]);
var isTownSearchable = Convert.ToBoolean(Request["bSearchable_3"]);

filteredCompanies = DataRepository.GetCompanies()
.Where(c => isNameSearchable && c.Name.ToLower().Contains(param.sSearch.ToLower())
||
isAddressSearchable && c.Address.ToLower().Contains(param.sSearch.ToLower())
||
isTownSearchable && c.Town.ToLower().Contains(param.sSearch.ToLower()));
}
else
{
filteredCompanies = allCompanies;
}

var isNameSortable = Convert.ToBoolean(Request["bSortable_1"]);
var isAddressSortable = Convert.ToBoolean(Request["bSortable_2"]);
var isTownSortable = Convert.ToBoolean(Request["bSortable_3"]);
var sortColumnIndex = Convert.ToInt32(Request["iSortCol_0"]);
Func<company, string=""> orderingFunction = (c => sortColumnIndex == 1 && isNameSortable ? c.Name :
sortColumnIndex == 2 && isAddressSortable ? c.Address :
sortColumnIndex == 3 && isTownSortable ? c.Town :
"");

var sortDirection = Request["sSortDir_0"]; // asc or desc
if (sortDirection == "asc")
filteredCompanies = filteredCompanies.OrderBy(orderingFunction);
else
filteredCompanies = filteredCompanies.OrderByDescending(orderingFunction);

var displayedCompanies = filteredCompanies.Skip(param.iDisplayStart).Take(param.iDisplayLength);
var result = from c in displayedCompanies select new[] { Convert.ToString(c.ID), c.Name, c.Address, c.Town };
return Json(new
{
sEcho = param.sEcho,
iTotalRecords = allCompanies.Count(),
iTotalDisplayRecords = filteredCompanies.Count(),
aaData = result
},
JsonRequestBehavior.AllowGet);
}

}