[RuntimeBinderException: 无法对 null 引用执行运行时绑定]
CallSite.Target(Closure , CallSite , Object ) +115
System.Dynamic.UpdateDelegates.UpdateAndExecute1(CallSite site, T0 arg0) +257
CallSite.Target(Closure , CallSite , Object ) +292
Web.DigitalLibrary.AllEbookType.bindProduct(Int32 pageIndex, Boolean haveChild) +3176
Web.DigitalLibrary.AllEbookType.Page_Load(Object sender, EventArgs e) +2836
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
System.Web.UI.Control.OnLoad(EventArgs e) +97
System.Web.UI.Control.LoadRecursive() +61
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693
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