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POReturning a file to View/Download in ASP.NET MVC
 

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    <p>I'm encountering a problem sending files stored in a database back to the user in ASP.NET MVC. What I want is a view listing two links, one to view the file and let the mimetype sent to the browser determine how it should be handled, and the other to force a download.</p> <p>If I choose to view a file called <code>SomeRandomFile.bak</code> and the browser doesn't have an associated program to open files of this type, then I have no problem with it defaulting to the download behavior. However, if I choose to view a file called <code>SomeRandomFile.pdf</code> or <code>SomeRandomFile.jpg</code> I want the file to simply open. But I also want to keep a download link off to the side so that I can force a download prompt regardless of the file type. Does this make sense?</p> <p>I have tried <code>FileStreamResult</code> and it works for most files, it's constructor doesn't accept a filename by default, so unknown files are assigned the a file name based on the url (which does not know the extension to give based on content type). If I force the file name by specifying it, I lose the ability for the browser to open the file directly and I get a download prompt. Has anyone else encountered this.</p> <p>These are the examples of what I've tried so far.</p> <pre><code>//Gives me a download prompt. return File(document.Data, document.ContentType, document.Name); </code></pre> <p></p> <pre><code>//Opens if it is a known extension type, downloads otherwise (download has bogus name and missing extension) return new FileStreamResult(new MemoryStream(document.Data), document.ContentType); </code></pre> <p></p> <pre><code>//Gives me a download prompt (lose the ability to open by default if known type) return new FileStreamResult(new MemoryStream(document.Data), document.ContentType) {FileDownloadName = document.Name}; </code></pre> <p>Any suggestions?</p>
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