MVC使用RDLC输出文件，为什么提示“本地报表处理期间出错”？

Question

 public ActionResult AmbulancePersonSignReport(string startTime, string endTime)
        {
            SS s= new SS();
            List<Ale> list = s.GetInfo(startTime, endTime);            var ReportPath = Server.MapPath("/RDLC/AmbulancePersonSign.rdlc");            var localReport = new Microsoft.Reporting.WebForms.LocalReport { ReportPath = ReportPath };            Microsoft.Reporting.WebForms.ReportParameter pStartTime = new Microsoft.Reporting.WebForms.ReportParameter("StartTime", startTime);
            Microsoft.Reporting.WebForms.ReportParameter pEndTime = new Microsoft.Reporting.WebForms.ReportParameter("EndTime", endTime);
            localReport.SetParameters(new Microsoft.Reporting.WebForms.ReportParameter[] { pStartTime, pEndTime });            var reportDataSource = new Microsoft.Reporting.WebForms.ReportDataSource("AmbulancePersonSignInfo", list);
            localReport.DataSources.Add(reportDataSource);            string mimeType;
            string encoding;
            string fileNameExtension;
            string reportType = "pdf";            string deviceInfo =
                "<DeviceInfo>" +
                "  <OutputFormat>" + reportType + "</OutputFormat>" +
                "  <PageWidth>8.5in</PageWidth>" +
                "  <PageHeight>11in</PageHeight>" +
                "  <MarginTop>0.5in</MarginTop>" +
                "  <MarginLeft>1in</MarginLeft>" +
                "  <MarginRight>1in</MarginRight>" +
                "  <MarginBottom>0.5in</MarginBottom>" +
                "</DeviceInfo>";            Warning[] warnings;
            string[] streams;
            byte[] renderedBytes;            renderedBytes = localReport.Render(
                reportType,
                deviceInfo,
                out mimeType,
                out encoding,
                out fileNameExtension,
                out streams,
                out warnings); (这段代码总报错：“本地报表处理期间出错”)           
            return File(renderedBytes, mimeType);
        }报表MVC

Answer 1

帮你调试了一下 异常出现在这里
   Microsoft.Reporting.WebForms.ReportParameter pStartTime = new Microsoft.Reporting.WebForms.ReportParameter("StartTime", startTime);
            Microsoft.Reporting.WebForms.ReportParameter pEndTime = new Microsoft.Reporting.WebForms.ReportParameter("EndTime", endTime);
            localReport.SetParameters(new Microsoft.Reporting.WebForms.ReportParameter[] { pStartTime, pEndTime });
这三句有问题

Answer 2

An attempt was made to set a report parameter 'StartTime' that is not defined in this report.

Answer 3

http://msdn.microsoft.com/zh-cn/library/vstudio/ms251790.aspx

Answer 4

      string deviceInfo =
                "<DeviceInfo>" +
                "  <OutputFormat>" + reportType + "</OutputFormat>" +
                "  <PageWidth>8.5in</PageWidth>" +
                "  <PageHeight>11in</PageHeight>" +
                "  <MarginTop>0.5in</MarginTop>" +
                "  <MarginLeft>1in</MarginLeft>" +
                "  <MarginRight>1in</MarginRight>" +
                "  <MarginBottom>0.5in</MarginBottom>" +
                "</DeviceInfo>";你把注释掉干嘛？

Answer 5

      string deviceInfo =
                "<DeviceInfo>" +
                "  <OutputFormat>" + reportType + "</OutputFormat>" +
                "  <PageWidth>8.5in</PageWidth>" +
                "  <PageHeight>11in</PageHeight>" +
                "  <MarginTop>0.5in</MarginTop>" +
                "  <MarginLeft>1in</MarginLeft>" +
                "  <MarginRight>1in</MarginRight>" +
                "  <MarginBottom>0.5in</MarginBottom>" +
                "</DeviceInfo>";你把注释掉干嘛？
不是那儿的问题，我把“参数属性”那边选择'允许为null',解决了。
[

Answer 6

      string deviceInfo =
                "<DeviceInfo>" +
                "  <OutputFormat>" + reportType + "</OutputFormat>" +
                "  <PageWidth>8.5in</PageWidth>" +
                "  <PageHeight>11in</PageHeight>" +
                "  <MarginTop>0.5in</MarginTop>" +
                "  <MarginLeft>1in</MarginLeft>" +
                "  <MarginRight>1in</MarginRight>" +
                "  <MarginBottom>0.5in</MarginBottom>" +
                "</DeviceInfo>";你把注释掉干嘛？
不是那儿的问题，我把“参数属性”那边选择'允许为null',解决了。
[
那就Ok了