Linq to sql 分页

   在读取的数据集进行跳跃查询，关键方法Skip().Take(); 

   Skip跳过序列中指定的元素

   Take从序列的开头返回指定数量的连续元素

    var select = from n in entities.lib_reportinfo
                     join e in entities.lib_enterprise on n.Ep_Guid equals e.Guid into temp_ne
                     from tt in temp_ne.DefaultIfEmpty()
                     select new
                     {
                         guid = n.Guid,
                         epName = tt.Ep_Name,
                         epTrade = tt.Ep_Trade,
                         riName = n.Ri_ReportName,
                         riTime = n.Ri_PubTime,
                         riNd = n.Ri_ReportYear,
                         riCreateTime = n.CreateTime,
                         riPath = n.Ri_ReportPath
                     };
        pagecount.Text = select.ToList().Count.ToString();
        var query = select.OrderByDescending(r => r.riCreateTime).Skip(pagesize * (pageindex - 1)).Take(pagesize);       
        ListView1.DataSource = query;
        ListView1.DataBind();