.net时间正序倒序排序

Question

我现在的代码是这样的，在前端没有反应。
                    if (!string.IsNullOrEmpty(time))
                    {
                        if (time == "0")//代表倒序
                        {
                            orderList.OrderByDescending(m => m.AddDate);
                        }
                        else//正序
                        {
                            orderList.OrderBy(m => m.AddDate);
                        }
                    }"AddDate": "2015-12-29T18:30:55.327",这个是时间

Answer 1

var orderedList = orderList.OrderBy(m => m.AddDate);
这个orderedList才是排序后的集合

Answer 2

var orderedList = orderList.OrderBy(m => m.AddDate);

Answer 3

  if (!string.IsNullOrEmpty(time))
                    {
                        if (time == "0")//代表倒序
                        {
                          orderList=  orderList.OrderByDescending(m => m.AddDate).ToList();
                        }
                        else//正序
                        {
                         orderList=   orderList.OrderBy(m => m.AddDate).ToList();
                        }
                    }这个和 str.Replace("2","B") 后 str值不变是一个道理