我有这样的更新功能:
public void Update(HomeBanner homebanner) { homebanner.EnsureValid(); DataSource.DataContext.Refresh(System.Data.Linq.RefreshMode.KeepCurrentValues,homebanner); DataSource.DataContext.SubmitChanges(); }
我写了一个更新控制器
[AcceptVerbs(HttpVerbs.Post)] //[ValidateAntiForgeryToken] [ValidateInput(false)] public ActionResult ManageImages(int ? id,FormCollection form) { HomeBanner homebanner= BannerRepository.RetrieveById(id); this.TryUpdateModel(homebanner); string photoName = saveImage("photo"); if (photoName != string.Empty) homebanner.ImageID = photoName; BannerRepository.Update(homebanner); return RedirectToAction("list","Admin"); }
然后是观点:
<% using (Html.BeginForm("ManageImages","Admin",FormMethod.Post,new { enctype = "multipart/form-data" })) {%> <h3>Manage Images</h3> <div class="label-field"> <label for="ID">Chọn vị trí:</label> <%= Html.DropDownList("ID",DataHelper.Banner().ToList().ToSelectList("value","name",Model.HomeBanner.ID.ToString()))%> </div> <div class="label-field"> <label for="photo"> Chọn hình</label> <input type="file" name="photo" value=""/> </div> <div class="label-field"> <label for="Link"> Liên kết</label> <input type="text" name="Link"/> </div> <p> <input type="submit" value="Lưu" /> </p> <% } %>
DataSource.DataContext.Refresh(System.Data.Linq.RefreshMode.KeepCurrentValues,homebanner);
并抛出异常:无法识别为刷新指定的对象.
我不知道为什么,我在调试时看到数据填充到对象. Plz有人帮帮我!