Using the .NET Crystal Report Viewer to display a report

//Loop through all the sections to find all the sub reports
                foreach (Section section in reportDoc.ReportDefinition.Sections)
                {
                    //Loop through all the report objects to find all subreports
                    foreach (ReportObject reportObject in section.ReportObjects)
                    {
                        if (reportObject.Kind == ReportObjectKind.SubreportObject)
                        {
                            SubreportObject subreportObject = (SubreportObject)reportObject;

                            //Open the subreport object and logon as for the general report
                            ReportDocument subreportDoc = (ReportDocument)subreportObject.OpenSubreport(subreportObject.SubreportName);

                            foreach (Table table in subreportDoc.Database.Tables)
                            {
                                //Before Change
                                DisplayInfo("SUB REPORT BEFORE", table);
                                
                                TableLogOnInfo tableLogonInfo = table.LogOnInfo;
                                tableLogonInfo.ConnectionInfo = connectionInfo;
                                table.ApplyLogOnInfo(tableLogonInfo);

                                //After Change
                                DisplayInfo("SUB REPORT AFTER", table);
                            }
                        }
                    }
                }

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