ReportViewer with multiple dataset and report parameters

//Set the report processing mode 
         this.reportViewer1.ProcessingMode = ProcessingMode.Local;
//Assign report file i.e. rdlc 
            this.reportViewer1.LocalReport.ReportEmbeddedResource = "GI.ServiceManager.ServiceReport.rdlc";

//Add datasets
            this.reportViewer1.LocalReport.DataSources.Add(new Microsoft.Reporting.WinForms.ReportDataSource("ProcessData", Program.CurrentServiceInstrument.Data.tblServiceReportProcessData));
            this.reportViewer1.LocalReport.DataSources.Add(new Microsoft.Reporting.WinForms.ReportDataSource("AccessoryData", Program.CurrentServiceInstrument.Data.tblServiceReportAccessoryData));
            this.reportViewer1.LocalReport.DataSources.Add(new Microsoft.Reporting.WinForms.ReportDataSource("Summary", Program.CurrentServiceInstrument.Data.tblServiceReportSummary));

//Create the report parameters and assign values to it
            ReportParameter[] rParam = new ReportParameter[2];
            rParam[0] = new ReportParameter("rpUnitType", Convert.ToString(Program.CurrentServiceInstrument.Data.tblServiceReportSummary.Rows[0]["UnitType"]));
            rParam[1] = new ReportParameter("rpSerialNumber", Convert.ToString(Program.CurrentServiceInstrument.Data.tblServiceReportSummary.Rows[0]["SerialNumber"]));

//Set report parameters
            this.reportViewer1.LocalReport.SetParameters(rParam);

//Refresh report to render it
            this.reportViewer1.RefreshReport();