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POAn object specified for refresh is not recognized
 

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    <p>I have a update function like this:</p> <pre><code>public void Update(HomeBanner homebanner) { homebanner.EnsureValid(); DataSource.DataContext.Refresh(System.Data.Linq.RefreshMode.KeepCurrentValues, homebanner); DataSource.DataContext.SubmitChanges(); } </code></pre> <p>And i write a update controller</p> <pre><code>[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"); } </code></pre> <p>and then the view:</p> <pre><code>&lt;% using (Html.BeginForm("ManageImages", "Admin", FormMethod.Post, new { enctype = "multipart/form-data" })) {%&gt; &lt;h3&gt;Manage Images&lt;/h3&gt; &lt;div class="label-field"&gt; &lt;label for="ID"&gt;Chọn vị trí:&lt;/label&gt; &lt;%= Html.DropDownList("ID", DataHelper.Banner().ToList().ToSelectList("value", "name",Model.HomeBanner.ID.ToString()))%&gt; &lt;/div&gt; &lt;div class="label-field"&gt; &lt;label for="photo"&gt; Chọn hình&lt;/label&gt; &lt;input type="file" name="photo" value=""/&gt; &lt;/div&gt; &lt;div class="label-field"&gt; &lt;label for="Link"&gt; Liên kết&lt;/label&gt; &lt;input type="text" name="Link"/&gt; &lt;/div&gt; &lt;p&gt; &lt;input type="submit" value="Lưu" /&gt; &lt;/p&gt; &lt;% } %&gt; </code></pre> <p>It get data as well but update step is not success: It mark right here</p> <pre><code>DataSource.DataContext.Refresh(System.Data.Linq.RefreshMode.KeepCurrentValues, homebanner); </code></pre> <p>and throw exception: <strong>An object specified for refresh is not recognized.</strong> I dont know why, i see data filled to object when i debug. Plz someone help me!</p>
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