如何删除“/ App_Data/uploads”文件夹中上传的文件ASP.NET MVC

我可以在通过电子邮件发送消息时上传/附加文件。这些文件存储在App_Data/uploads文件夹中，所以当我试图发送多个文件时，需要很长时间才能发送它。我认为这是因为该文件夹已经有很多文件，所以我想删除文件夹中的文件，当它已经通过电子邮件发送。请帮帮我。我只是新的这种东西。谢谢！这里的控制器：如何删除“/ App_Data/uploads”文件夹中上传的文件ASP.NET MVC

[HttpPost] 
[ValidateAntiForgeryToken] 
public async Task<ActionResult> Index(EmailFormModel model, IEnumerable<HttpPostedFileBase> files) 
{ 
    if (ModelState.IsValid) 
    { 

     List<string> paths = new List<string>(); 

     foreach (var file in files) 
     { 
      if (file.ContentLength > 0) 
      { 
       var fileName = Path.GetFileName(file.FileName); 
       var path = Path.Combine(Server.MapPath("~/App_Data/uploads"), fileName); 
       file.SaveAs(path); 

       paths.Add(path); 
      } 

     } 

      var message = new MailMessage(); 
      foreach (var path in paths) 
      { 
       var fileInfo = new FileInfo(path); 
       var memoryStream = new MemoryStream(); 
       using (var stream = fileInfo.OpenRead()) 
       { 
        stream.CopyTo(memoryStream); 
       } 
       memoryStream.Position = 0; 
       string fileName = fileInfo.Name; 
       message.Attachments.Add(new Attachment(memoryStream, fileName)); 
      } 

      //Rest of business logic here 
      string EncodedResponse = Request.Form["g-Recaptcha-Response"]; 
      bool IsCaptchaValid = (ReCaptcha.Validate(EncodedResponse) == "True" ? true : false); 
      if (IsCaptchaValid) 
      { 

       var body = "<p>Email From: {0} ({1})</p><p>Subject: {2} </p><p>Message:</p><p>{3}</p>"; 
       message.To.Add(new MailAddress("***@gmail.com")); // replace with valid value 
       message.From = new MailAddress("***@ymailcom"); // replace with valid value 
       message.Subject = "Your email subject"; 
       message.Body = string.Format(body, model.FromName, model.FromEmail, model.FromSubject, model.Message); 
       message.IsBodyHtml = true; 
       using (var smtp = new SmtpClient()) 
       { 
        var credential = new NetworkCredential 
        { 
         UserName = "***@gmail.com", // replace with valid value 
         Password = "***" // replace with valid value 
        }; 
        smtp.Credentials = credential; 
        smtp.Host = "smtp.gmail.com"; 
        smtp.Port = 587; 
        smtp.EnableSsl = true; 
        await smtp.SendMailAsync(message); 
        //return RedirectToAction("Sent"); 
        ViewBag.Message = "Your message has been sent!"; 

        //TempData["message"] = "Message sent"; 
        ModelState.Clear(); 
        return View("Index"); 
       } 

      } 
      else 
      { 
       TempData["recaptcha"] = "Please verify that you are not a robot!"; 
      } 
     } 
     return View(model); 

    }

来源

2016-05-13 Kendall H.

intially检查文件是否存在，然后尝试下面的代码

File.Delete("~/App_Data/uploads/XXXXX.xls");

来源

2016-05-13 07:55:25 stylishCoder

谢谢你的帮忙。 –

到电子邮件，你必须先检查发送之前...

if (System.IO.File.Exists(fullPath of your file)) 
      { 
       System.IO.File.Delete(fullPath of your file); 
      }

来源

2016-05-13 07:59:10

谢谢你的帮忙。 –

你最欢迎... @ KenHemmo –

试试这个：

System.IO.DirectoryInfo di = new DirectoryInfo(path); 

foreach (FileInfo file in di.GetFiles()) 
{ 
    file.Delete(); 
}

来源

2016-05-13 08:02:49 SeM

谢谢你的帮忙。 –

我强烈推荐修补不使用App_Data文件夹来存储任何文件，按照惯例仅为存储数据库文件而创建。

来源

2016-05-13 19:22:23

如何删除“/ App_Data/uploads”文件夹中上传的文件ASP.NET MVC

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