Question

Pardon the dumb newbie question here; web programming isn’t my forte… (blush)

I have an aspx page running on a web server. I have a blob (byte array) containing any kind of binary file, plus a file name.

I would like to push this file to be downloaded through the browser onto the client, and opened using whatever application is default for this file type. I really don’t want to save the blob as a file on the server; that will leave a terrible housekeeping mess that I just don’t want to think about.

I did try googling this question, but I guess I’m using the wrong keywords.

This really should be obvious how to do it, but I’m having no joy.

What is the trick?

Thanks!

Answer 1

Response.BinaryWrite(byteArray); 

You should also set the content type

Response.ContentType = 'application/pdf'; 

But that will be based on your file type.

And the file name (and everything together) is done like this

Response.AddHeader('content-disposition',     String.Format('attachment;filename={0}', fileName));     Response.ContentType = 'application/pdf'; Response.BinaryWrite(byteArray);