“/”应用程序中的服务器错误。

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行 21:             modelSB = new BLL.SjAdvertising().GetModelBystrWhere("ClassID=144678138029277184 and IsPass=1");
行 22:             modelS = new BLL.Solution().GetModelBystrWhere("ClassID=" + ClassID + " and IsPass=1");
行 23:             modelT = new BLL.Solution().GetModelBystrWhere("ClassID=" + modelS.ParentID + " and IsPass=1");
行 24: 
行 25:             repType.DataSource = new BLL.Solution().GetList("ParentID=0 and IsPass=1 order by Ordinal asc,AddTime desc");

[NullReferenceException: 未将对象引用设置到对象的实例。]
   solution2.Page_Load(Object sender, EventArgs e) in f:\usr\localuser\qyw2080250001\solution\solution2.aspx.cs:23
   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