public static WorkShedule IntSignToShedule(int? intSing)
{
if (intSing == 5)
return KadrController.Instance.Model.WorkShedules.Where(wSh => wSh.id == 1).SingleOrDefault();
if (intSing == 6)
return KadrController.Instance.Model.WorkShedules.Where(wSh => wSh.id == 2).SingleOrDefault();
throw new ArgumentOutOfRangeException("Название должности");
}