No data in RDLC report using WPF

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WPF

SSRS

I have the following in a WPF window trying to open an RDLC report using a WindowsFormsHost. When the report opens there is a report header but no data. The query has no parameters and I have previewed the data in the data set many times.

I have seen many attempts to explain the meanings of ReportDataSource.Name and ReportDataSource.value but it is not yet clear to me what each is supposed to mean. I have not been able to implement anything but that which is listed below.

Obviously I need to know how to get the detail in the report.

string reportPath = "C:\\Dev\\2010\\2010_BoxingAdmin\\BoxingAdmin\\BoxingAdmin\\Report1.rdlc";
string ds = "DEVELOPMENT;Initial Catalog=Boxing;Integrated Security=True";
ReportDataSource rds = new ReportDataSource("DataSet1", ds);
ReportViewer reportViewer = new ReportViewer();
reportViewer.ProcessingMode = ProcessingMode.Local;
reportViewer.LocalReport.ReportPath = reportPath;
reportViewer.LocalReport.DataSources.Add(rds);
windowsFormsHost1.Child = reportViewer;
reportViewer.RefreshReport();

Thanks