错误明细:
GrapeCity.ActiveReports.ReportException: 发生了一个意外错误。更多信息: 'the data returned by LocateDataSource are null' ---> System.InvalidOperationException: the data returned by LocateDataSource are null
在 #UwA.#uue.ExecuteReader(IDbConnection connection, IDbTransaction transaction, #PTe expressionEvaluatorFactory)
在 #2wA.#9Ve.#U.#aWe.#Kcf(#bVe recordManager, #PTe expressionEvaluatorFactory)
在 #2wA.#9Ve.#Kcf(#dWe[] commands, #PTe expressionEvaluatorFactory)
在 #2wA.#1Ve.#aBA()
在 GrapeCity.ActiveReports.ReportsCore.Rendering.ReportProcessor.#dEf(ReportDataDefinition reportDataDef)
在 GrapeCity.ActiveReports.ReportsCore.Rendering.ReportProcessor.#Tol()
在 GrapeCity.ActiveReports.ReportsCore.Rendering.ReportProcessor.#fn(Boolean forceDataRefresh, Boolean forceParameterDataRefresh)
在 GrapeCity.ActiveReports.Document.PageDocument.#0Kf(Boolean forceDataRefresh, Boolean forceParameterDataRefresh)
--- 内部异常堆栈跟踪的结尾 ---
在 GrapeCity.ActiveReports.Document.PageDocument.#0Kf(Boolean forceDataRefresh, Boolean forceParameterDataRefresh)
在 GrapeCity.ActiveReports.Document.PageDocument.Render(IRenderingExtension renderingExtension, StreamProvider streams, NameValueCollection settings, Boolean forceDataRefresh, Boolean forceParameterDataRefresh)
在 GrapeCity.ActiveReports.Viewer.Win.Rdlx.RdlReport.<>c__DisplayClassf.<LoadImpl>b__b()
在 GrapeCity.ActiveReports.Viewer.Win.AsyncLoader.<>c__DisplayClass7.#cAz(Object , DoWorkEventArgs )
在 System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e)
在 System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)
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