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Subreports

Posted on 2004-07-30
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Last Modified: 2008-02-01
We are trying to use a subreport, but now in Crystal Reports 10 we cannot use the Load() method or the SetParameterValue() method.  How am I supposed to get the DataSource and Parameters set for the subreport if I can't even load it!

TIA

Mike
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Question by:jeshbr
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Expert Comment

by:ebolek
ID: 11678135
You can get a reference to the subreport from the main report by using

Opensubreport methoid then

You can use following code to set the parameetrs of the subreport. The report document is the referenced subreport from the open method

//sets the parameter values for main report and sub reports if any
                  CrystalDecisions.CrystalReports.Engine.ParameterFieldDefinition ParameterFieldDefinition;
                  CrystalDecisions.Shared.ParameterDiscreteValue  ParameterDiscreteValue;
                  CrystalDecisions.Shared.ParameterValues  ParameterValues;                              
                  int paramcount;
                  paramcount = this.MyParameterValues.Count;
                  ParameterFieldDefinition = null;
                  string ConversionVariable;
                  ConversionVariable = null;                  
                  for (int i = 0; i != paramcount; i++)//have to put paramcount otherwise hard code it .works
                  {
                        ConversionVariable = Convert.ToString(MyReport.DataDefinition.ParameterFields[i].ParameterType);  
                        if (ConversionVariable == "StoreProcedureParameter")       
                        {
                              ParameterFieldDefinition = MyReport.DataDefinition.ParameterFields[i];  
                              ParameterValues = new CrystalDecisions.Shared.ParameterValues();
                              ParameterDiscreteValue = new CrystalDecisions.Shared.ParameterDiscreteValue();      
                              ParameterDiscreteValue.Value = this.MyParameterValues[i];      
                              ParameterValues.Add(ParameterDiscreteValue);
                              ParameterFieldDefinition.CurrentValues.Clear();
                              ParameterFieldDefinition.DefaultValues.Clear();  
                              ParameterFieldDefinition.ApplyCurrentValues(ParameterValues);
                        }
                  }
                  return ParameterFieldDefinition;
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Author Comment

by:jeshbr
ID: 11678309
This is the code I currently have.

//      Set the data source for the sub reports
for (int liSubReport = 0; liSubReport < SubReports.Count; liSubReport++)
{
      lcSubReport = SubReports[liSubReport].ToString();
      Report.OpenSubreport(lcSubReport).Load(this.GetReportPath() + "rptFeeReportSub1.rpt");

      //      Set the data source
      if (SubReportDataSources != null)
            Report.Subreports[lcSubReport].SetDataSource(SubReportDataSources[liSubReport]);

      //      Load the parameters for this sub report
      if (SubReportParameters != null)
      {
            for (int liSRParameter = 0;
                  liSRParameter < SubReportParameters[liSubReport].GetLength(0);
                  liSRParameter++)
            {
                  lcParameter = SubReportParameters[liSubReport][liSRParameter, 0].ToString();

                  ParameterValues lpvValues = new ParameterValues();
                  ParameterDiscreteValue lpdvParameter = new ParameterDiscreteValue();
                  lpdvParameter.Value = SubReportParameters[liSubReport][liSRParameter, 1];

                  lpvValues.Add(lpdvParameter);

                  Report.Subreports[lcSubReport].DataDefinition.
                        ParameterFields[lcParameter].ApplyCurrentValues(lpvValues);
            }
      }
}

But after it's all said and done the parameter values and data source for the main and subreport are wrong.
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Author Comment

by:jeshbr
ID: 11678317
The Load() fails by the way!
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LVL 10

Expert Comment

by:ebolek
ID: 11678389
it fails because when you open the sub report, you try to load
Create a reportdocument variable mysubreport and write this
MySubReport = MyReport.OpenSubreport(MySubReportObject.SubreportName)
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Author Comment

by:jeshbr
ID: 11678463
Even if I do that though it won't let me load it, it gives me this error...Not supported in subreports
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Expert Comment

by:ebolek
ID: 11678516
Look at this code. This code works.I have done this , You have to cast the object first

CrystalDecisions.CrystalReports.Engine.ReportDocument MySubReport;
                  CrystalDecisions.CrystalReports.Engine.SubreportObject MySubReportObject;
                  foreach (CrystalDecisions.CrystalReports.Engine.ReportObject MyReportObject in MyReport.ReportDefinition.ReportObjects)
                  {
                        if (MyReportObject.Kind == CrystalDecisions.Shared.ReportObjectKind.SubreportObject)
                        {
                              MySubReportObject = (CrystalDecisions.CrystalReports.Engine.SubreportObject)MyReportObject;
                              
                              if (MySubReportObject.SubreportName != _subreportname)
                              {
                                    if (this.ReportName == "InvestigationReport_CoverPage")
                                    {
                                          int i;
                                          MySubReport = MyReport.OpenSubreport(MySubReportObject.SubreportName);                               
                                          setlogoninfo(MySubReport);
                                          SubReportName = MySubReportObject.SubreportName;
                                          //this.SubReportDocument.Add(MySubReport);
                                          if (MySubReportObject.SubreportName == "InvestigationReport_Vehicles.rpt")
                                          {
                                                i = 1;
                                          }
                                          else
                                          {
                                                i = 0;
                                                
                                          }
                                          SetReportParameters_InvestigationReport(MySubReport,i);
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Author Comment

by:jeshbr
ID: 11693864
What does the code behind SetReportParameters_InvestigationReport() look like?
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Accepted Solution

by:
ebolek earned 500 total points
ID: 11951665
SetReportParameters_InvestigationReport()  is the twisted version of the code that I posted

That code should help your problem

Regards
Emre
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