为什么 Stimulsoft 报告不能以 pdf 格式保存报告？

Question

我有一份报告，在以 pdf 格式保存时出现此错误。

System.Runtime.InteropServices.ExternalException (0x80004005)：GDI+ 中出现一般错误。 在 System.Drawing.Graphics.CheckErrorStatus(Int32 status) at System.Drawing.Graphics.DrawPath(Pen pen, GraphicsPath path) at Stimulsoft.Report.Components.StiComponentPainter.DrawCheckStyle(Graphics g, RectangleD rect, StiCheckStyle checkStyle, StiCheckBox checkBox, Stimulsoft.Report.Painters.StiCheckBoxGdiPainter.PaintCheck(StiCheckBox checkBox, Graphics g, RectangleD rect, Single zoom) at Stimulsoft.Report.Components.StiCheckBox.GetMetafile() at Stimulsoft.Report.Export.StiPdfExportService.RenderDataPdfPdfPdfPdf pp) 在 Stimulsoft.Report.Export.StiPdfExportService.ExportPdf1（StiReport 报告，流流，StiPdfExportSettings 设置）在 Stimulsoft.Report.Export.StiPdfExportService.ExportPdf（StiReport 报告，流流，StiPdfExportSettings 设置）在 Stimulssoft.Report. .ExportAsPdf(StiReport 报告、StiPdfExportSettings 设置、流流、布尔 saveFileDialog) 在 Stimulsoft.Report.Mvc.StiMvcViewer.ProcessExport(HttpContextBase http) 上下文、StiReport 报告、StiEmailOptions 选项）位于 D:\\Projects\\SPMS\\Single-Thrust-Spms\\SPMS\\SPMS\\Controllers\\ReportController.cs:line 653 中的 SPMS.Controllers.ReportController.ExportReport()

报告文件

操作代码：

public ActionResult SensorsStatusSnapshot()
        {
            try
            {
                DateTime dateTimeStart = (DateTime)Session[_sessionList.SensorsStatusDateTimeStart];
                DateTime dateTimeEnd = (DateTime)Session[_sessionList.SensorsStatusDateTimeEnd];

                List<SensorsStatu> sensorStates = new List<SensorsStatu>();
                StiReport report = new StiReport();
                report.Load(Server.MapPath("~/Content/Reports/SensorsStatus.mrt"));

                if (HttpContext.Cache[_cacheList.SensorsStatus] == null)
                {
                    using (SPMSEntities db = new SPMSEntities())
                    {
                        sensorStates = db.SensorsStatus.ToList();
                        HttpContext.Cache.Insert(_cacheList.SensorsStatus, sensorStates, null,
                            DateTime.Now.AddMinutes(15), Cache.NoSlidingExpiration);
                    }
                }
                else
                {
                    sensorStates = HttpContext.Cache[_cacheList.SensorsStatus] as List<SensorsStatu>;
                }
                sensorStates = sensorStates.Where(x => x.Date >= dateTimeStart && x.Date <= dateTimeEnd).ToList();
                string userFullName;
                using (SPMSEntities db = new SPMSEntities())
                {
                    string UserId = User.Identity.GetUserId();
                    Profile profile = db.Profiles.First(x => x.UserId == UserId);
                    userFullName = profile.FirstName + " " + profile.LastName;
                }
                report.Dictionary.Variables.Add(new StiVariable("Params", "TodayPersianDate",
                    Convertor.ToPersianDate(DateTime.Now)));
                report.Dictionary.Variables.Add(new StiVariable("Params", "UserFullName", userFullName));
                report.RegBusinessObject("Data", sensorStates);
                report.Compile();
                return StiMvcViewer.GetReportSnapshotResult(report);
            }
            catch (Exception e)
            {
                HelperStoreSqlLog.WriteError(e, "SensorsStatusSnapshot");
                return View();
            }
        }

我使用缓存设置但没有解决：

                report.ReportCacheMode = StiReportCacheMode.On;
            StiOptions.Engine.ReportCache.AmountOfProcessedPagesForStartGCCollect = 2; // default - 20
            StiOptions.Engine.ReportCache.AmountOfQuickAccessPages = 5; // default - 50

什么是问题？