I think here is a problem, in path of report-
// Path of the Report - XLS, PDF etc.
string fileName = @"Dev\SalesSupport\TestWethose Invoiced Transaction.rdl";
// Name of the report - Please note this is not the RDL file.
string _reportName = @"TestWethose Invoiced Transaction";
Please suggest me, from where to search for path of report in order to assign it here in fileName