public List <_QuestionInfo> GetCheckList() { DataTable ds = dal.GetCheckList(); List <_QuestionInfo> list = new List <_QuestionInfo>(); list.AddRange(ModelConvertHelper <_QuestionInfo> .ConvertToList(ds).OrderByDescending(a => Convert.ToDateTime(a.CreateTime).ToString("yyyy-MM-dd")).ThenByDescending(a => a.PVCount).ToList()); return(list); }