private static Point[] GetArrowPolygon(State.SortArrow stateId, Rectangle prect)
 {
     return(stateId switch
     {
         State.SortArrow.HSAS_SORTEDUP => GetUpArrowPolygon(prect),
         _ => GetDownArrowPolygon(prect)
     });
        private static Point[] GetArrowPolygon(State.SortArrow stateId, Rectangle prect)
        {
            switch (stateId)
            {
            case State.SortArrow.HSAS_SORTEDUP:
                return(GetUpArrowPolygon(prect));

            // case State.SortArrow.HSAS_SORTEDDOWN:
            default:
                return(GetDownArrowPolygon(prect));
            }
        }