Open PDF result in browser tab with MVC 3

Question

I am using ASP.NET MVC 3. I have a controller action that returns a PDF file like this:

Public Class ReportController
    ...
    Function Generate(id As Int         


        

Answer 1

I got the answer from the related links on the right:

Response.AppendHeader("Content-Disposition", "inline")
Return File(output, "application/pdf")

The PDF opens in a tab, but the filename hint is lost, even if I do it like this:

Response.AppendHeader("Content-Disposition", "inline; filename=something.pdf")
Return File(output, "application/pdf", "something.pdf")

So finally I didn't bother to give filename hint at all.

EDIT

ASP.NET MVC 3's File with 3 parameters:

Return File(output, "application/pdf", "something.pdf")

will add Content-Disposition: attachment; filename="something.pdf" to the response header, even if there is already a Content-Disposition in the response header.

So if you manually added Content-Disposition to the header, and then use File with 3 parameters, you end up with two Content-Disposition headers. Firefox 8 will say that the response is corrupted if the response header is like this.

So best way to do it now is add Content-Disposition manually for 'inline', and then use File with 2 parameters:

Response.AppendHeader("Content-Disposition", "inline; filename=something.pdf")
Return File(output, "application/pdf")