Im close via processing the subreport on the mainform, but for some season when I call the LocalReport_SubreportProcessing, it does not going into or should I say it doesnt not jump into the method when I click the plus or minus sign, i get a dataretrieve error, please reiview error log , I dont know where to the error logs on the computer. this.reportViewer.LocalReport.SubreportProcessing += new SubreportProcessingEventHandler(LocalReport_SubreportProcessing); it never jumps into this method below, can someone assist me protected void LocalReport_SubreportProcessing(object sender, Microsoft.Reporting.WinForms.SubreportProcessingEventArgs e) { ReportParameterInfoCollection getParam = e.Parameters; DateTime DateTimeByOp = Convert.ToDateTime(reportViewer.LocalReport.OriginalParametersToDrillthrough[0].Values[0].ToString()); e.DataSources.Add( new ReportDataSource("Datatable",this.BindingSource.Filter = "OpTimeStamp = #" + DateTimeByOp + "#")); reportViewer.LocalReport.ReportEmbeddedResource = "Example.rdlc"; this.rDataSource.Value = this.BindingSource; this.titleParameter = new ReportParameter("BookTitle", this.BookTitle); this.reportViewer.LocalReport.SetParameters(new ReportParameter[] { titleParameter }); this.reportViewer.LocalReport.DataSources.Add(DataSource); this.reportViewer.LocalReport.Refresh(); this.reportViewer.RefreshReport(); }

Hi, From your information, I notice that you want to display a subreport in a main report within local mode report, this kind of the report is not like reporting service, of course the method of creating a subreport in the main report is different as well. Besides the main report datasource, you should add subreport's datasource to the main report as well. This walkthrough is focus this issue, you could click this link to get a detailed reference: http://cid-45bfd76b0f2c3808.photos.live.com/view.aspx/picture/Walkthrough-Displaying%20Sub%20report%20in%20Main%20report%20of%20local%20report%20using%20Report%20Viewer.docx Thanks, Challen Fu

I have a question I notice on one of the steps you said tabular , why not matrix?, keep in mind im in visual studio 2010, So i thinks already defaulted to matrix table instead of tabulaf, if you dont mind can you give instruction from visual 2010? or link where in they are showing steps from 2010 c#

Another thing keep in mind i only have one one raw dataset and then a generic dataset .I also have 3 report files or 3 rdlc files which all uses the same generic dataset. So let my bill the hierachy. Level1_Report Level2_Report Level3_Report I want embed Level2_Report on or in the Level1_Report and drill down using a toggle or hyperlink to go to Level2_report. Keep in mind again they all uses the generic dataset. I do a merge from the raw dataset to the generic dataset