public ActionResult GetCandidateList(DataTableFilterModel filter)
 {
     try
     {
         DataTableFilterModel dataFilter = _perforamnce.GetCandidateList(filter);
         return(Json(new { draw = filter.draw, recordsFiltered = dataFilter.recordsFiltered, recordsTotal = dataFilter.recordsTotal, data = dataFilter.data },
                     JsonRequestBehavior.AllowGet));
     }
     catch (Exception ex)
     { }
     return(Json(new { }, JsonRequestBehavior.AllowGet));
 }