On Apr 4, 1:24 pm, "jcmag" <j...@yahoo.com> wrote:
> I have a report with a chart and a textbox. I use the 'navigation'
> property of the textbox to jump to another report. When my request
> returns an empty dataset I have the following exception:
>
> [1580] w3wp!library!1!04/04/2007-20:16:26:: i INFO: Call to
> RenderFirst( '/Reporting/ReportProjects' )
> [1580] w3wp!processing!1!04/04/2007-20:16:26:: e ERROR: Throwing
> Microsoft.ReportingServices.ReportProcessing.ReportProcessingException:
> An unexpected error occurred in Report Processing., ;
> [1580] Info:
> Microsoft.ReportingServices.ReportProcessing.ReportProcessingException:
> An unexpected error occurred in Report Processing. --->
> System.NullReferenceException: Object reference not set to an instance
> of an object.
> [1580] at
> Microsoft.ReportingServices.ReportProcessing.ReportObjectModel.FieldsImpl.ResetUsedInExpression()
> [1580] at
> Microsoft.ReportingServices.ReportProcessing.Action.ResetObjectModelForDrillthroughContext(ObjectModelImpl
> objectModel, IActionOwner actionOwner)
> [1580] at
> Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeRICollection.CreateTextBoxInstance(TextBox
> textBox, ProcessingContext processingContext, Int32 index, IScope
> containingScope)
> [1580] at
> Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeRICollection.CreateInstance(ReportItem
> reportItem, Boolean setupEnvironment, Int32 index)
> [1580] at
> Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RuntimeRICollection.CreateInstances(ReportItemColInstance
> collectionInstance, ReportItemCollection reportItemsDef)
> [1580] at
> Microsoft.ReportingServices.ReportProcessing.ReportProcessing.Merge.CreateInstances(ParameterInfoCollection
> parameters, Boolean noRows)
> [1580] at
> Microsoft.ReportingServices.ReportProcessing.ReportProcessing.Merge.Process(ParameterInfoCollection
> parameters, Boolean mergeTran)
> [1580] at
> Microsoft.ReportingServices.ReportProcessing.ReportProcessing.ProcessReport(Report
> report, ProcessingContext pc, ProcessingContext context)
> [1580] at
> Microsoft.ReportingServices.ReportProcessing.ReportProcessing.ProcessReport(Report
> report, ProcessingContext pc, Boolean snapshotProcessing, Boolean
> processWithCachedData, GetReportChunk getChunkCallback, ErrorContext
> errorContext, DateTime executionTime, CreateReportChunk
> cacheDataCallback, ProcessingContext& context)
> [1580] at
> Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RenderReport(IRenderingExtension
> renderer, DateTime executionTimeStamp, GetReportChunk
> getCompiledDefinitionCallback, ProcessingContext pc, RenderingContext
> rc, CreateReportChunk cacheDataCallback, Boolean& dataCached)
> [1580] --- End of inner exception stack trace ---
>
> If I remove the textbox, all is fine (nothing is displayed)
> Any idea ?

> Have you tried to include a dummy default single resultset and in the
> main report filter that resultset out?
>