从物理路径下载ASP mvc 4中的文件

Question

I need to make downloading files from the server . Server is specified physical path. the file is downloaded , but there are problems that I do not know how to fix . 1) All the files are named as "Download".2) does not have an extension . Help me, please, I'm new to ASP MVC

Code of Controller :

        public ActionResult NIRInfo()
    {
        List<string> filesList = new List<string>();
        var dir = new System.IO.DirectoryInfo(@"Z:\Docs");
        System.IO.FileInfo[] fileNames = dir.GetFiles("*.*");
        var xow = from i in db.NIRs where i.Id == id select i.File;
        foreach (var i in xow)
        {
            fileNames = dir.GetFiles(i);
            foreach (var f in fileNames)
            {
                filesList.Add(f.Name);
            }
            ViewData["fList"] = filesList;
        }
        return View(nir);

    }

    public FileResult Download(string Name)
    {
        return File(@"Z:\Docs\" + Name,  MediaTypeNames.Application.Octet);
    }

Code of view

                            @{ var fList = ViewData["fList"] as List<string>;}

                        @if (ViewData["fList"] != null)
                        {
                            <table>
                                @foreach (var f in fList)
                                {
                                    <tr>
                                        <td>
                                            <a href="@Url.Action("Download", "NIR", new {  Name = @f })">@f</a>
                                        </td>
                                    </tr>
                                }
                            </table>
                        }

Answer 1

You need to specify a filename in method overload. Look at third parameter in File method

public FileResult Download(string Name)
{
    return File(@"Z:\Docs\" + Name,  MediaTypeNames.Application.Octet, "document.txt");
}

Answer 2

HttpResponseBase response;

response.Clear();
response.AddHeader("content-disposition", "attachment;filename=\"" + fileName + "\"");
response.TransmitFile(Path.Combine(FileName, Path.GetFileName(fileName )));