public ActionResult Index(int page = 1, string keywords = "")
        {
            ViewBag.Keywords = keywords;
            var sortingPagingBuilder = new SortingPagingBuilder
            {
                Keywords = keywords,
                Sorts    = new SortBuilder
                {
                    ColumnName  = "Title",
                    ColumnOrder = SortBuilder.SortOrder.Descending
                }
            };
            var paging = new Paging
            {
                PageNumber  = page,
                PageSize    = PageSize,
                TotalRecord = 0
            };
            var contactInformations = _contactInfoService.PagedList(sortingPagingBuilder, paging);

            if (contactInformations != null && contactInformations.Any())
            {
                var pageInfo = new Helper.PageInfo(ExtentionUtils.PageSize, page, paging.TotalRecord, i => Url.Action("Index", new { page = i, keywords }));
                ViewBag.PageInfo = pageInfo;
            }
            return(View(contactInformations));
        }