SubReport DataSource Help

[christine]

I have just upgraded a reporting project that is several years old and I see that there have been some breaking changes in the reporting structure.  

I several sub reports inside of a report.  The datasource to each one is determined dynamically inside of the Ctor of the report itself.
How would I accomplish this within the new model?   Any help would be greatly appreciated. 


public ClaimsReport()
        {
            InitializeComponent();

            BindToSubReport(1, subReport_Sacramento);
            BindToSubReport(2, subReport_Modesto);
            BindToSubReport(3, subReport_Fresno);
        }

    public  void BindToSubReport(int officeID, SubReport subReport)
        {
            using (eEntities context = new eEntities ()) {

                List<StrapReportClaimOutput> outputList = context.StrapReportClaimOutputs
                                                 .Where(x => x.OfficeID.Equals(officeID))
                                                 .OrderByDescending(o => o.TotalDocketing)
                                                 .ToList();

               subReport.ReportSource.DataSource = outputList;
            }
        }

[Steve]

Hello Christine,

You should now create an InstanceReportSource and assign the report to its ReportDocument property. For more information refer to the following links:

• Report Sources
• How to migrate your project to utilize the new ReportSource objects

As for setting DataSource for a SubReport item, the easiest way would be to use Binding for the detailed report. Since the sub-report is a child of the main report it can access it's elements (including the data-elements) e.g.:

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this.Bindings.Add(new Telerik.Reporting.Binding("DataSource", "=ReportItem.Parent.DataObject.ColumnUsedForDS"));

You can also create a user function that will assign the ReportSource to the SubReport item. 

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public static ReportSource GetReportSource(object dataObject)
{
    var report = new DetailedReport();
    report.DataSource = dataObject;
    return new InstanceReportSource { ReportDocument = report };
}

and the binding in the main report will be:

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this.subReport1.Bindings.Add(new Telerik.Reporting.Binding("ReportSource", "= GetReportSource(ReportItem.DataObject)"));

Kind regards,
Steve
the Telerik team