Invalid Section Height when I load the nth subreport

Question

I am attempting to load multiple sub-reports into a master report document. The process is:
Use the RAS SDK to obtain a reference to the detail area
Add a section to the detail area
Import the subreport into the detail area
The code is pretty simple as well.
        private ReportDocument AddSubReportToParent(string subReportName, string fileName)
            try
                CrystalDecisions.ReportAppServer.ReportDefModel.ISCRArea detailArea = _crystalDocument.ReportClientDocument.ReportDefController.ReportDefinition.DetailArea;
                CrystalDecisions.ReportAppServer.ReportDefModel.Section section = new CrystalDecisions.ReportAppServer.ReportDefModel.Section();
                string sectionName = "Section" + subReportName.Replace(".", "");
                section.Name = sectionName;
                section.Kind = CrystalDecisions.ReportAppServer.ReportDefModel.CrAreaSectionKindEnum.crAreaSectionKindDetail;
                section.Width = headerArea.Sections[0].Width;
                _crystalDocument.ReportClientDocument.ReportDefController.ReportSectionController.Add(section, detailArea, -1);
                _crystalDocument.ReportClientDocument.SubreportController.ImportSubreport(subReportName, _configSettings.InputPath + "\\" + fileName, section);
                ReportDocument subreport = _crystalDocument.OpenSubreport(subReportName);
                return subreport;
            catch (Exception ex)
                Logger.ErrorException(this.GetReportBuilderErrorText(this.GetReportBuilderErrorText(String.Format("Unable to add subreport '{0}' from file {1} to custom Crystal Report", subReportName, fileName))), ex);
                throw;
However, when I attempt to load the 41st report (or sometimes greater) the ImportSubreport method throws an exception with the message, "Invalid Section Height". Note that I have one section for each report. This is to make it easier to place the subreport on in the document and on it's own page.
I cannot seem to determine what is going wrong. Why would the 41+ import fail?
I am using Crystal Reports Version for Visual Studio .NET, 13.0.8.

Answer 1

Hi Ryan,
No need to test, Ludek found this KBA:
1670453 - RAS Can't Create Objects in Crystal Report Sections Past
40
So your only work around is to create a template report with dummy subreports already embedded in it.
Here's something to get you started:
btnReportObjects = Text box
subreportClinetDocument.IsImported is a new API so you may need to upgrade CR for VS.
btnReportObjects.Text = "";
flcnt = 0;
foreach (String resultField in rptClientDoc.SubreportController.GetSubreportNames())
    SubreportController subreportController = rptClientDoc.SubreportController;
    SubreportClientDocument subreportClinetDocument = subreportController.GetSubreport(resultField);
    if (subreportClinetDocument.IsImported)
        textBox1 = "Imported: " + subreportClinetDocument.SubreportLocation.ToString();
        btnReportObjects.Text += textBox1;
        btnReportObjects.AppendText(" 'End' \n");
        ++flcnt;
        btnCount.Text = flcnt.ToString();
    else
        textBox1 = "embedded: " + " " + resultField.ToString();
        btnReportObjects.Text += textBox1;
        btnReportObjects.AppendText(" 'End' \n");
        ++flcnt;
        btnCount.Text = flcnt.ToString();
    CrystalDecisions.CrystalReports.Engine.ReportObjects crReportObjects;
    //set the crSections object to the current report's sections
    CrystalDecisions.CrystalReports.Engine.Sections crSections = rpt.ReportDefinition.Sections;
    if (resultField.ToString() == "World Sales Report.rpt")
        //loop through all the sections to find all the report objects
        foreach (CrystalDecisions.CrystalReports.Engine.Section crSection in crSections)
            crReportObjects = crSection.ReportObjects;
            //loop through all the report objects to find all the subreports
            foreach (CrystalDecisions.CrystalReports.Engine.ReportObject crReportObject in crReportObjects)
                if (crReportObject.Kind == ReportObjectKind.SubreportObject)
                    CrystalDecisions.ReportAppServer.ReportDefModel.Section rasSection;
                    rasSection = rptClientDoc.ReportDefController.ReportDefinition.FindSectionByName(crSection.Name);
                    CrystalDecisions.ReportAppServer.Controllers.SubreportClientDocument MyNewSub;
                    MyNewSub = rptClientDoc.SubreportController.GetSubreport(resultField.ToString());
                    CrystalDecisions.ReportAppServer.ReportDefModel.SubreportObject objSubreport = rptClientDoc.ReportDefController.ReportObjectController.GetAllReportObjects()[crReportObject.Name] as CrystalDecisions.ReportAppServer.ReportDefModel.SubreportObject;
                    CrystalDecisions.ReportAppServer.ReportDefModel.SubreportObject objSubreport2 = (CrystalDecisions.ReportAppServer.ReportDefModel.SubreportObject)objSubreport.Clone(true);
                    rptClientDoc.ReportDefController.ReportObjectController.Remove(objSubreport);
                    CrystalDecisions.ReportAppServer.ReportDefModel.SubreportLinks mySubLinks = rptClientDoc.SubreportController.GetSubreportLinks(objSubreport2.SubreportName.ToString());
                    mySubLinks.RemoveAll();
                    objSubreport2.Left = 10;
                    objSubreport2.Height = 10;
                    objSubreport2.Width = 10;
                    objSubreport2.Name = "sub1";
                    objSubreport2.SubreportName = "sub1";
                    //rptClientDoc.ReportDefController.ReportObjectController.Modify(rptClientDoc.ReportDefController.ReportObjectController.GetAllReportObjects()[crReportObject.Name] as CrystalDecisions.ReportAppServer.ReportDefModel.SubreportObject, objSubreport2);
                    rptClientDoc.ReportDefController.ReportObjectController.Add(objSubreport2, rasSection, -1);
I don't recall now what I was testing but all of the basics are there to replace the dummy subreports with your new ones.
I DID NOT test this with more than 40 subreport objects either so you may still run into the SDK limit. We may have to ask the Report Designer Resource if this can be handled in the report by using Conditional suppression...
Don