About EF page turning query database

1./// <summary>
        /// Turn the page to search
        /// </summary>
        /// <typeparam name="Tkey"></typeparam>
        /// <param name="pageSize"> The size of each page </param>
        /// <param name="pageIndex"> Page </param>
        /// <param name="total"> total </param>
        /// <param name="whereLambda"> Query criteria </param>
        /// <param name="orderbyLambda"> Sorting conditions </param>
        /// <param name="isAsc"> In ascending order </param>
        /// <returns></returns>
        public IQueryable<T> LoadPageItems<Tkey>(int pageSize, int pageIndex, out int total, Expression<Func<T, bool>> whereLambda, Func<T, Tkey> orderbyLambda, bool isAsc)
        {
            total = Entities.Where(whereLambda).Count(); 
            if (isAsc)
            {
                var temp = Entities.Where(whereLambda).OrderBy<T, Tkey>(orderbyLambda)
               .Skip(pageSize * (pageIndex - 1))
               .Take(pageSize);
                return temp.AsQueryable();
            }
            else
            {
                var temp = Entities.Where(whereLambda).OrderByDescending<T, Tkey>(orderbyLambda)
                    .Skip(pageSize * (pageIndex - 1))
                    .Take(pageSize);
                return temp.AsQueryable();
            }
        }