Hi Support team,

We are using WebDataGrid (Infragistics4.Web.v11.2, Version=11.2.20112.1019) in one of our application. We have observed following inconsistent exception. Any help on this? This happens inconsistently on some of the UI events or processing. The SummaryRow.GetSummaryValue exception comes as an internal exception.

05 Jul 2012, 07:23:16.482: [18] ERROR Demo.Web.Global [Application_Error] : Exception of type 'System.Web.HttpUnhandledException' was thrown.

05 Jul 2012, 07:23:16.482: [18] ERROR Demo.Web.Global [Application_Error] :    at System.Web.UI.Page.HandleError(Exception e)

   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

   at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

   at System.Web.UI.Page.ProcessRequest()

   at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)

   at System.Web.UI.Page.ProcessRequest(HttpContext context)

   at ASP.views_demoview_aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\mop_imt\f5044836\6990e107\App_Web_dp1c0cey.5.cs:line 0

   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()

   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

05 Jul 2012, 07:23:16.482: [18] ERROR Demo.Web.Global [Application_Error] : Object reference not set to an instance of an object.

05 Jul 2012, 07:23:16.482: [18] ERROR Demo.Web.Global [Application_Error] :    at Infragistics.Web.UI.GridControls.SummaryRow.GetSummaryValue(GridField field, Summary summary, ColumnSummaryInfo colSumInfo, SummaryRowSetting sumRowSetting, Boolean raiseEvnt)

   at Infragistics.Web.UI.GridControls.SummaryRow.BehaviorEvents_PreRender(Object sender)

   at Infragistics.Web.UI.GridControls.GridBehaviorEvents.OnPreRender()

   at Infragistics.Web.UI.GridControls.GridBot.HandlePreRender()

   at Infragistics.Web.UI.Framework.Data.FlatDataBoundControl.OnPreRender(EventArgs e)

   at Infragistics.Web.UI.GridControls.WebDataGrid.OnPreRender(EventArgs e)

   at System.Web.UI.Control.PreRenderRecursiveInternal()

   at System.Web.UI.Control.PreRenderRecursiveInternal()

   at System.Web.UI.Control.PreRenderRecursiveInternal()

   at System.Web.UI.Control.PreRenderRecursiveInternal()

   at System.Web.UI.Control.PreRenderRecursiveInternal()

   at System.Web.UI.Control.PreRenderRecursiveInternal()

   at System.Web.UI.Control.PreRenderRecursiveInternal()

   at System.Web.UI.Control.PreRenderRecursiveInternal()

   at System.Web.UI.Control.PreRenderRecursiveInternal()

   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)