高手请进 →水晶报表中的子报表问题?

Question

Response.Write(rpt.OpenSubreport(rpt.ReportFooterSection1.ReportObjects["Subreport1"].Name).ToString());
rpt.OpenSubreport(rpt.ReportFooterSection1.ReportObjects["Subreport1"].Name).SetDataSource(ds);
在运行到rpt.OpenSubreport(rpt.ReportFooterSection1.ReportObjects["Subreport1"].Name).SetDataSource(ds);
时总是提示错误:
未将对象引用设置到对象的实例。
请搞手指点!!

Answer 1

Consignation_SO_Report    rpt=new Consignation_SO_Report(); 
rpt.SetDataSource(drr.GetSOConsignationReport());
CrystalDecisions.CrystalReports.Engine.SubreportObject ocSubreport=(CrystalDecisions.CrystalReports.Engine.SubreportObject) rpt.DetailSection1.ReportObjects["Subreport1"];
CrystalDecisions.CrystalReports.Engine.ReportDocument ocSub=ocSubreport.OpenSubreport("C_CREDIT_Consignation_Report.rpt");
ocSub.SetDataSource(drr.GetC_CreditConsignationReport());