mvc开发中如何实现编辑功能？？

Question

本帖最后由 nijat910 于 2012-08-07 17:59:32 编辑

Answer 1

用EF的话如下操作  if (id.HasValue && id.Value > 0)
                    {
                        T_Order order = EF.T_Order.Where(a => a.ID == id && a.DeleteFlag == 0).SingleOrDefault();
                        if (order != null)
                        {
                            order.OrderSN = model.OrderSN;
                            order.ActionTime = model.ActionTime;
                            order.UpdateTime = DateTime.Now;
                            order.UpdateUser_id = UserInfo.UserID;
                            order.Customer_ID = int.Parse(model.Down_ID);                        }
                        EF.SaveChanges();
                        AddLog("修改", "订单ID:" + order.ID);
                        return Json(new { message = "订单修改成功！", OK = true, orderID = order.ID.ToString() });
                    }

Answer 2

[HttpPost]
   public ActionResult Edit(Movie newMovie)
   {
       dbContext.Movies.AddObject(newMovice);
       dbContext.SaveChanges();
       return View();
   }

Answer 3

  var m = dbContext.Movies.Where(x => x.id == newMovice.id).Single();
  UpdateModel(m); 
   dbContext.SaveChanges();
   return View();

Answer 4

数据是可以更新了，不过他在Edit视图里头的
<div class="editor-field">
                <%: Html.TextBoxFor(model => model.ReleaseData, String.Format("{0:g}", Model.ReleaseData)) %>
                <%: Html.ValidationMessageFor(model => model.ReleaseData) %>
            </div>
这一段内报 “未将对象引用设置到对象的实例。” 这个错误。 这下这个怎么解决？？ 请大侠指教！