예제 #1
0
        public static IOrderedQueryable <T> AddOrderBy <T, TKey>(this IOrderedQueryable <T> q,
                                                                 Expression <Func <T, TKey> > orderExpression, bool isDescending = false)
        {
            var hasBeenOrdered = q.IsOrdered();

            if (hasBeenOrdered)
            {
                return(!isDescending?q.ThenBy(orderExpression) : q.ThenByDescending(orderExpression));
            }
            return(!isDescending?q.OrderBy(orderExpression) : q.OrderByDescending(orderExpression));
        }