what is difference between rdlc and rdl?
 .rdl is a server controlled report and .rdlc is a client-side controlled report. You have to deploy an .rdl file to a report server and access it using that server.With a .rdlc report, you can create the report and use a ReportViewer control to run the report in your application.You have to rename .rdlc to .rdl first.). RDL files are fully compatible with the ReportViewer control runtime. RDL are used for SQL Server Reporting Services and RDLC are used in Visual Studio for client side reporting. 