错误提示:GrapeCity.ActiveReports.ReportException: No data has been set. Please specify either a DataSet or a DataView to use 在 GrapeCity.ActiveReports.Document.PageDocument.Render(IRenderingExtension renderingExtension, StreamProvider streams, NameValueCollection settings, Boolean forceDataRefresh, Boolean forceParameterDataRefresh, CancellationToken token)
在 cf.c.<LoadImpl>b__5()
在 System.Threading.Tasks.Task.InnerInvoke()
在 System.Threading.Tasks.Task.Execute()
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