Change name of file sent to client?

Answer 1

I believe this will work for you.

Response.AddHeader("content-disposition", "attachment; filename=NewFileName.csv");

Answer 2

Add a "Content-Disposition" header with the value "attachment; filename=filename.csv".

Answer 3

Response.AddHeader("content-disposition", "attachment; filename=File.doc")

Answer 4

You just need to set the Content-Disposition header

Content-Disposition:  attachment; filename=data.csv;

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This Microsoft Support article has some good information

How To Raise a "File Download" Dialog Box for a Known MIME Type