無法下載文件到MVC 5

Question

直播網站，我有這樣的功能：

public ActionResult Download(string FileName) 
    { 

     if (FileName != null) 
     { 
      string filepath = AppDomain.CurrentDomain.BaseDirectory + "/uploads/" + FileName; 
      byte[] filedata = System.IO.File.ReadAllBytes(filepath); 
      string contentType = MimeMapping.GetMimeMapping(filepath); 

      var cd = new System.Net.Mime.ContentDisposition 
      { 
       FileName = FileName, 
       Inline = true, 
      }; 

      Response.AppendHeader("Content-Disposition", cd.ToString()); 

      return File(filedata, contentType); 
     } 
     return RedirectToAction("Index"); 
    } 

相同的代碼在本地服務器工作，但不是在活的服務器，任何人都可以告訴我原因嗎？

Answer 1

這可能b不是你的答案，但你可以使用return File(path, System.Net.Mime.MediaTypeNames.Application.Octet, name); 將下載文件，寫整個事情在單行 ......（我用它在mvc4，它在真實生活的作品也..）

由於例如，

var audio_path = "/" + path.Substring(path.IndexOf("Content")); 
String audio_name = path.Substring(path.LastIndexOf("/") + 1); 
return File(audio_path, System.Net.Mime.MediaTypeNames.Application.Octet, audio_name); 

Answer 2

您可以使用以下代碼下載文件：

#region Download File ==> 
     public ActionResult downloadfile(string Filename, string MIMEType) 
     { 
      try 
      { 
       string file_name = "/Files/EvidenceUploads/" + Filename; 
       string contentType = ""; 
       //Get the physical path to the file. 
       string FilePath = Server.MapPath(file_name); 

       string fileExt = Path.GetExtension(file_name); 

       contentType = MIMEType; 

       //Set the appropriate ContentType. 
       Response.ContentType = contentType; 
       Response.AppendHeader("content-disposition", "attachment; filename=" + (new FileInfo(file_name)).Name); 

       //Write the file directly to the HTTP content output stream. 
       Response.WriteFile(FilePath); 
       Response.End(); 
       return View(FilePath); 
      } 
      catch 
      { 
       Response.End(); 
       return View(); 
       //To Do 
      } 

     } 
     #endregion