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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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Comment
Question by:jeshbr
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9 Comments
 
LVL 10

Expert Comment

by:ebolek
Comment Utility
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
Comment Utility
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
Comment Utility
The Load() fails by the way!
0
 
LVL 10

Expert Comment

by:ebolek
Comment Utility
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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LVL 3

Author Comment

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

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

That code should help your problem

Regards
Emre
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