“/”应用程序中的服务器错误。

---

行 273:        else
行 274:        {
行 275:            book_select_content.InnerHtml += "<li>" + (xh_catalog.FindNode("/Catalog/Item[@Value='" + editionId + "']/Item[@Value='" + moduleId + "']").Attributes["Name"].Value) + "<a href=\"/1-" + stageId + "-" + subjectId + "/" + HttpUtility.UrlEncode(keywords) + "-" + (editionId + "-0-" + seriesId + "-" + typeId + "-" + years) + ".html\"><i class='layui-icon layui-icon-close-fill split_close'></i></a></li>";
行 276:        }
行 277:        book_select_content.InnerHtml += "<li class=\"splithr\">-</li>";

[NullReferenceException: 未将对象引用设置到对象的实例。]
   _Default.Page_Load(Object sender, EventArgs e) in d:\Webs\Sjjb-Jb1000\BookValue\Default.aspx.cs:275
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +50
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627