public JsonResult GetComission()
 {
     DropDownListsRepository model = new DropDownListsRepository();
      NewPromotionRepository NewProm = new NewPromotionRepository();
      int HotelMinumumComissionRate = NewProm.GetParameterValue("HotelMinumumComissionRate");
      return Json(model.GetComission(HotelMinumumComissionRate).OrderBy(o => o.Comission).Select(c => new { Comission = c.Comission }).OrderBy(o => o.Comission), JsonRequestBehavior.AllowGet);
 }