PagingExtensions.cs

 public static class PagingExtensions
    {
        public static IEnumerable<T> Page<T>(this IEnumerable<T> list, int pageSize, int page)
        {
            return list.Skip((page - 1) * pageSize).Take(pageSize);
        }
        public static IQueryable<T> Page<T>(this IQueryable<T> list, int pageSize, int page)
        {
            return list.Skip((page - 1) * pageSize).Take(pageSize);
        }
    }