Question

I have a Action in controller as

public ActionResult Download()    
{ 
    return File(FileStream, "application/octet-stream", fileName); 
}

If I want to use FilePathresult as:

public FilePathResult Download()
{ 
    return File(FileStream, "application/octet-stream", fileName);
}

can I call the Download() on click of a button like this

@Html.ActionLink("FileDownload", "Download", new { file = item.FileName, GuID = item.DocumentGuID }) /text).Width(10); 

Also is the implementation of Download() is correct in the second instance i.e.,in

public FilePathResult Download()

?

Answer 1

Your ActionLink defines parameters that you want to pass so you will need to add those to your action

@Html.ActionLink("FileDownload", "Download", new { file = item.FileName, GuID = item.DocumentGuID }) /text).Width(10); 

I’m not sure what /text.Width(10); is doing there but a properly formed ActionLink with parameters also must define the Html Attributes as the last parameter, just pass in null.

Here is an example of a properly formed ActionLink.

@Html.ActionLink("ActionName", "ControllerName", new { id = 10}, null)

You have a file and a GuID parameter in your link, so add those to your action as parameters.

public FilePathResult Download(string file, Guid GuID)
{ 
    return File(FileStream, "application/octet-stream", fileName);
}

Give it a try and let us know what happens 🙂

Happy coding!