“/”应用程序中的服务器错误。

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行 33: 	//定义栏目名称
行 34: 	var nav=5;
行 35: 	var Menu='<%#PageColumn.ColumnId.ToInt()%>';
行 36: 
行 37: 

[NullReferenceException: 未将对象引用设置到对象的实例。]
   ASP.szswtk201707041217_cwdls_index_61_aspx.__DataBind__control3(Object sender, EventArgs e) in f:\usr\localuser\hyw5127220001\szswtk201707041217\cwdls\index_61.aspx:35
   System.Web.UI.Control.OnDataBinding(EventArgs e) +92
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +85
   System.Web.UI.Control.DataBind() +15
   System.Web.UI.Control.DataBindChildren() +187
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +94
   System.Web.UI.Control.DataBind() +15
   ASP.szswtk201707041217_cwdls_index_61_aspx.Page_Load(Object sender, EventArgs e) in f:\usr\localuser\hyw5127220001\szswtk201707041217\cwdls\index_61.aspx:25
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnLoad(EventArgs e) +92
   System.Web.UI.Control.LoadRecursive() +54
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +772