请教：ReportDocument,Export()的错误信息

[Oldnorse]

我想直接输出.PDF到一路径下，不直接打印。
参考：
http://topic.csdn.net/t/20041027/10/3494729.html

但是在.Export()的时候报错：
Message "Missing parameter field current value."

Stack trace:
ex.ToString() "CrystalDecisions.CrystalReports.Engine.ParameterFieldCurrentValueException: Missing parameter field current value.\r\n at .F(String \t, EngineExceptionErrorID \n)\r\n at .B(String , Int32 )\r\n at CrystalDecisions.CrystalReports.Engine.FormatEngine.internalSetReportInfo(RequestContext reqContext)\r\n at CrystalDecisions.CrystalReports.Engine.FormatEngine.internalGetViewContext(ReportPageRequestContext reqContext, * viewContext)\r\n at CrystalDecisions.CrystalReports.Engine.FormatEngine.Export(ExportRequestContext reqContext)\r\n at CrystalDecisions.CrystalReports.Engine.FormatEngine.Export()\r\n at CrystalDecisions.CrystalReports.Engine.ReportDocument.Export()\r\n at PrintingService.BusinessRules.ReportPrinter.Print2Printer(Int32 intNumCopies) in d:\\projects\\ocap\\print server\\printingservice\\businessrules\\reportprinter.cs:line 122" string

[Oldnorse]

找到原因了：Database.Tables[0].SetDataSource（XXX）是一定要有的。省了50大毛。
顺便问一句，套打的英语怎么说阿，呵呵

[LIANGQIAN1984]

up