'/LearnMgr' 應用程式中發生伺服器錯誤。

並未將物件參考設定為物件的執行個體。

描述: 在執行目前 Web 要求的過程中發生未處理的例外狀況。請檢閱堆疊追蹤以取得錯誤的詳細資訊,以及在程式碼中產生的位置。

例外狀況詳細資訊: System.NullReferenceException: 並未將物件參考設定為物件的執行個體。

原始程式錯誤:


行 14:         Post post = PostDao.getPost(long.Parse(Request["id"]), Request["from"]);
行 15: 
行 16:         if (post.Filepath != null)
行 17:         {
行 18:             this.hidFilePath1.Value = post.Filepath;

原始程式檔: c:\website\LearnMgr\lists\PostDetail.aspx    行: 16

堆疊追蹤:


[NullReferenceException: 並未將物件參考設定為物件的執行個體。]
   ASP.lists_postdetail_aspx.__RenderContent3(HtmlTextWriter __w, Control parameterContainer) in c:\website\LearnMgr\lists\PostDetail.aspx:16
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +116
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +78
   ASP.master_masterpage_lists_master.__Renderform2(HtmlTextWriter __w, Control parameterContainer) in c:\website\LearnMgr\master\MasterPage_Lists.master:92
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +116
   System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +11835584
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +46
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +78
   System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +49
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +249
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +78
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +249
   System.Web.UI.Page.Render(HtmlTextWriter writer) +38
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +78
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +8752


版本資訊: Microsoft .NET Framework 版本:4.0.30319; ASP.NET 版本:4.7.4081.0