错误明细:
GrapeCity.ActiveReports.ReportException: 缺少必须的元素。Image MIMEType 是必须元素。 ---> GrapeCity.ActiveReports.Rdl.Validation.ValidationReportException: Required element missing. The Image MIMEType is a required element.
在 GrapeCity.ActiveReports.PageReportModel.Validator.CheckForErrors(Int32 position)
在 GrapeCity.ActiveReports.PageReportModel.Validator.ValidateItem(IValidateable item)
在 GrapeCity.ActiveReports.PageReportModel.Validator.ProcessComponents(IReportComponentContainer container)
在 GrapeCity.ActiveReports.PageReportModel.Validator.ProcessComponents(IReportComponentContainer container)
在 GrapeCity.ActiveReports.PageReportModel.Validator.Validate(Report report)
在 GrapeCity.ActiveReports.Rendering.ReportProcessor.ProcessReport(Boolean skipValidation, CancellationToken cancel, ActionKey[] interactiveActions)
在 GrapeCity.ActiveReports.Rendering.ReportProcessor.Process(Boolean forceDataRefresh, Boolean forceParameterDataRefresh, CancellationToken token, Boolean skipValidation, ActionKey[] interactiveActions)
在 GrapeCity.ActiveReports.Document.PageDocument.GetRenderableReport(Boolean forceDataRefresh, Boolean forceParameterDataRefresh, CancellationToken token)
--- 内部异常堆栈跟踪的结尾 ---
在 GrapeCity.ActiveReports.Document.PageDocument.GetRenderableReport(Boolean forceDataRefresh, Boolean forceParameterDataRefresh, CancellationToken token)
在 GrapeCity.ActiveReports.Document.PageDocument.Render(IRenderingExtension renderingExtension, StreamProvider streams, NameValueCollection settings, Boolean forceDataRefresh, Boolean forceParameterDataRefresh, CancellationToken token, IProgress`1 progress)
在 GrapeCity.ActiveReports.Viewer.Common.Internal.RdlReport..<LoadImpl>b__7()
在 System.Threading.Tasks.Task.InnerInvoke()
在 System.Threading.Tasks.Task.Execute()
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