Question

in my controller, this is the code i have

   public FileResult Download(string file)
    {



        var vFullFileName = HostingEnvironment.MapPath("~/App_Data/Files/");

        var files = uploadedfileRepository.AllIncluding();
        string filename = (from f in files

                           select f.FileName).First();


        return File(Path.Combine(vFullFileName, filename), "application/csv", filename);
    }

I put the breakpoint and the file point to the right directory, but why still give me File not found exception?

and in my view this is what i have

 <td>
            @Html.ActionLink("Download", "Download", new { id = item.FileName})
        </td

Answer 1

Your action method have a parameter with name file. But your are HTML will have a parameter/ query string called id, instead od file, So change your view code to

@Html.ActionLink("Download", "Download", new { file= item.FileName})

Also to get the path, try this

string fullFilePath=Path.Combine(Server.MapPath("~/App_Data"),filename)
return File(fullFilePath,"application/csv",filename);