How to bind multiple reports to a single Report Viewer c#

Question

How to bind multiple reports to a single Report Viewer using C# WinForms and RDLC?

 

Report A5 size Don't Show in Setupfile error show like this.

 

An error occurred during local report processing. The report definition for report 'Report_A5Size' has not been specified.

 

if (GlobalVariable.ReporSize == "A5_Size")

{

//reportViewer1.LocalReport.ReportPath = string.Format("Report_A5Size.rdlc");

reportViewer1.LocalReport.ReportPath = Environment.CurrentDirectory + "//Report_A5Size.rdlc";

}