同时同秒产生PDF问题

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本帖最后由 wiljone 于 2019-12-25 15:30 编辑

  var exporter = new GrapeCity.ActiveReports.Export.Pdf.Section.PdfExport();
  var ReportPath = OriginalReportPath;
  GrapeCity.ActiveReports.PageReport rpt = new GrapeCity.ActiveReports.PageReport(new System.IO.FileInfo(ReportPath));
  rpt.Report.DataSources[0].ConnectionProperties.ConnectString =    System.Configuration.ConfigurationManager.ConnectionStrings["SQLConn"].ConnectionString;

  rpt.Report.ReportParameters[0].DefaultValue.Values.Add(tax_id);
  rpt.Report.ReportParameters[1].DefaultValue.Values.Add(dns.Tables[0].Rows["ifa03c"].ToString());
  rpt.Report.ReportParameters[2].DefaultValue.Values.Add(dns.Tables[0].Rows["ifa04c"].ToString());

  var path = System.Web.Hosting.HostingEnvironment.MapPath("~/") + "时分秒+帐号 + ".Pdf";//---
这里会加上指定时间后(如:时分秒) 才继续执行以下程序
//----
exporter.Export(rpt.Document, path);
rpt.Dispose();
exporter.Dispose();

只有1个人产生PDF时，没有任何问题，但2个人在「同时同分同秒」产生PDF时，会产生错误「An item with the same key has already been added.」
在exporter.Export(rpt.Document, path)  这一段;

请问这个要如何解决?

详细错误讯息:
GrapeCity.ActiveReports.ReportException: An unexpected error occurred. Additional information: 'An item with the same key has already been added.' ---> System.ArgumentException: An item with the same key has already been added. at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) at GrapeCity.ActiveReports.Expressions.Remote.LoaderProxy.#pR1(CustomCode customCode, List`1 modules) at GrapeCity.ActiveReports.Expressions.Remote.LoaderProxy.Compile(CustomCode customCode) at #cxA.#wc0.Build(IAppDomainBuilder appDomainBuilder, CustomCode customCode, IInstanceFactory instanceFactory) at #DAA.#zc0.Build(PageReport pageReport, IAppDomainBuilder appDomainBuilder, Parameters parameters) at GrapeCity.ActiveReports.ReportEval.<>c__DisplayClass5.#MO0() at GrapeCity.ActiveReports.ReportEval.EvaluationContext..ctor(PageReport pageReport, #U9m options) at GrapeCity.ActiveReports.ReportEval.#ZSZ(PageReport pageReport, #U9m options) at GrapeCity.ActiveReports.ReportEval.#ZSZ(PageReport pageReport, Parameters parameters) at #Uj1.#aTZ.get_EvaluationContext() at #Uj1.#aTZ.<.ctor>b__4() at GrapeCity.ActiveReports.ReportsCore.Rendering.ReportParameters.ParameterInfo.get_EvaluationContext() at GrapeCity.ActiveReports.ReportsCore.Rendering.ReportParameters.ParameterInfo.Evaluate(ExpressionInfo expression) at GrapeCity.ActiveReports.ReportsCore.Rendering.ReportParameters.ParameterInfo.#2j1(Parameter parameter) at GrapeCity.ActiveReports.Expressions.ExpressionObjectModel.Parameter.#Ykf() at GrapeCity.ActiveReports.ReportsCore.Rendering.ReportParameters.ReportParametersProvider.#xEf() at GrapeCity.ActiveReports.ReportsCore.Rendering.ReportParameters.ReportParametersProvider.get_Parameters() at #Uj1.#aTZ.#DEf() at GrapeCity.ActiveReports.ReportsCore.Rendering.ReportProcessor.#Tol() at GrapeCity.ActiveReports.ReportsCore.Rendering.ReportProcessor.#fn(Boolean forceDataRefresh, Boolean forceParameterDataRefresh) at GrapeCity.ActiveReports.Document.PageDocument.#0Kf(Boolean forceDataRefresh, Boolean forceParameterDataRefresh) --- End of inner exception stack trace --- at GrapeCity.ActiveReports.Document.PageDocument.#0Kf(Boolean forceDataRefresh, Boolean forceParameterDataRefresh) at GrapeCity.ActiveReports.Document.PageDocument.Render(IRenderingExtension renderingExtension, StreamProvider streams, NameValueCollection settings, Boolean forceDataRefresh, Boolean forceParameterDataRefresh) at GrapeCity.ActiveReports.Export.Pdf.Section.PdfExport.Export(PageDocument document, Stream stream, String pageRange) at GrapeCity.ActiveReports.Export.Pdf.Section.PdfExport.Export(PageDocument document, String filePath, String pageRange) at GrapeCity.ActiveReports.Export.Pdf.Section.PdfExport.Export(PageDocument document, String filePath)

KearneyKang · KearneyKang

这个是多线程的问题，同时执行，导致导出报错。这个可能需要你做一个异步的操作

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[已处理] 同时同秒产生PDF问题

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