我对 aspnetpager和repeater以及查询条件的封装

/// <summary>
        /// 绑定所有图片列表
        /// </summary>
        /// <param name="a"></param>
        /// <param name="AspNetPager1"></param>
        /// <param name="filter"></param>
        protected void BindListPicPager(Repeater a, AspNetPager AspNetPager1, Expression<Func<bool>> filter) {
            using (var context = new JGDJEntities()) {
                var new_list = new List<JY_Newss>();
                try {
                    //获取所有已经通过审核的有图片的新闻
                    new_list =
                        context.JY_Newss.Where(t => t.JY_NewsClass.Any(nc => nc.IsPass == 1) && t.NewsProperty != null).ToList();
                    AspNetPager1.RecordCount = new_list.Count();
                    if (AspNetPager1.StartRecordIndex == 1) {
                        new_list = new_list.Take(15).ToList();
                    } else {
                        new_list = new_list.Skip(AspNetPager1.StartRecordIndex - 1).Take(15).ToList();
                    }
                    AspNetPager1.PageChanged += (c, d) => {
                        BindList(a, AspNetPager1, null);
                    };
                    a.DataSource = new_list;
                    a.DataBind();

                } catch { }
            }

        }