could not select subreport - .rdlc - VS 2010 - visual-studio-2010

Question

I had created many reports with VS 2008. Now starting with VS 2010 for new requirement. Please note I am using .rdlc report
I could add subreport control to the report but could not select the available reports. There is no browse button or a dropdown to choose the available .rdlc report.
When I manually type the report name, the reportviewer doesnt show up any subreport. I dont see any error message on the 'Output' window either.
How do I use subreport with VS 2010? Am I missing anything? Any help is appreciated.
I have SQL 2005/2008 (report services installed), VS 2008, VS 2010 installed on the same PC.

Answer 1

First select sub report from Toolbox and put where you want to show.See the image bellow
Now right click on sub report properties and type your sub report name .
Now You have to create a sub report even handler in your .cs file from where you load your report like that:
public Ctor()
{
string path = HttpContext.Current.Server.MapPath("Your Report path");
ReportViewer1.Reset(); //important
ReportViewer1.ProcessingMode = Microsoft.Reporting.WebForms.ProcessingMode.Local;
ReportViewer1.LocalReport.SubreportProcessing += Process_Subreport;
LocalReport objReport = ReportViewer1.LocalReport;
objReport.ReportPath = path;
// Add Parameter If you need
List<ReportParameter> parameters = new List<ReportParameter>();
parameters.Add(new ReportParameter("Name", Value));
ReportViewer1.LocalReport.SetParameters(parameters);
ReportViewer1.ShowParameterPrompts = false;
ReportViewer1.ShowPromptAreaButton = false;
ReportViewer1.LocalReport.Refresh();
//Add Datasourdce
ReportDataSource reportDataSource = new ReportDataSource();
reportDataSource.Name = "Datasource Name Used due to report design";
reportDataSource.Value = DataSourceValue;
objReport.DataSources.Add(reportDataSource);
objReport.Refresh();
}
Now Create Even Handler Method to load sub report details.
private void Process_Subreport(object sender, SubreportProcessingEventArgs e)
{
//You can get parameter from main report
int paramname = int.Parse(e.Parameters[0].Values[0].ToString());
//You can also add parameter in sub report if you need like main report
//Now add sub report data source
e.DataSources.Add(new ReportDataSource("DataSource Name",DataSourceValue)));
}
I think it will be works for you.Thank you.