LINQ to Entities 不识别方法“System.String ToString(System.String)”，因此该方法无法转换为存储表达式。

public ActionResult GetNewsList()

        {

            var newsList = _newsRepository.GetNewsList();

            var newsViewList = newsList.Select(news => new NewsViewModel()

            {

                Id = news.Id,

                Title = news.Title,

                Content = news.Content,

                CategoryName = news.Category.Name,

                PublishDate = news.PublishDate.ToString("yyyy-MM-DD HH:mm:ss"),

                UpdateDate = news.UpdateDate.ToString("yyyy-MM-DD HH:mm:ss"),

                IsActived = news.IsActived ? "是" : "否"

            });

            return Json(newsViewList, JsonRequestBehavior.AllowGet);



        }