[NullReferenceException: Object reference not set to an instance of an object.]
BookList.ObjectDataSource1_Selected(Object sender, ObjectDataSourceStatusEventArgs e) +71
System.Web.UI.WebControls.ObjectDataSourceView.OnSelected(ObjectDataSourceStatusEventArgs e) +125
System.Web.UI.WebControls.ObjectDataSourceView.InvokeMethod(ObjectDataSourceMethod method, Boolean disposeInstance, Object& instance) +837
System.Web.UI.WebControls.ObjectDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +1895
System.Web.UI.WebControls.DataList.CreateControlHierarchy(Boolean useDataSource) +383
System.Web.UI.WebControls.BaseDataList.OnDataBinding(EventArgs e) +88
System.Web.UI.WebControls.BaseDataList.EnsureDataBound() +85
System.Web.UI.Control.EnsureChildControls() +106
System.Web.UI.Control.PreRenderRecursiveInternal() +57
System.Web.UI.Control.PreRenderRecursiveInternal() +226
System.Web.UI.Control.PreRenderRecursiveInternal() +226
System.Web.UI.Control.PreRenderRecursiveInternal() +226
System.Web.UI.Control.PreRenderRecursiveInternal() +226
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3670
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