How the report is being generated in rdl to other format like Excel or pdf?

Question

Is it from the server or in the application? I am using the below line to Export from rdl. byte[] bytes = reportViewer.ServerReport.Render("EXCEL", null, out mimeType, out encoding, out extension, out streamIds, out warnings);

Answer 1

The ServerReport part should have been a dead giveaway.

It is being generated from the Report Server.

From ReportViewer.ServerReport Property

Gets the instance of the Report class that is used when the ProcessingMode for the ReportViewer control is set to Remote.

Remote

Specifies remote processing mode against a Reporting Services report server.