asp.net mvcを使用してGodaddyの電子メールワークスペースで添付ファイルを添付した電子メールを送信

Question

godaddy workspaceの電子メールアカウントで、godaddy上のアップロードされた添付ファイルを電子メールで送信しようとしています。メールは送信されましたが、アップロードされたファイルが正しく添付されていません。ビューレベルで

<form action="@Url.Action("index")" method="post" data-form-title="CONTACT FORM" enctype="multipart/form-data"> 
        @Html.AntiForgeryToken() 

         ...other page inputs.. 


        <div class=" row row-sm-offset"> 
         <div class="col-xs-12 col-md-12"> 
          <div class="form-group"> 
           <label class="form-control-label" for="form1-h-name">Upload Design (Properties: Images Type - PNG, JPEG; Max Size - 500kb)</label> 
           @Html.TextBoxFor(x => x.Design, 
           new 
           { 
            @class = "form-control", 
            type = "file", 
            required = "true" 
           }) 
          </div> 
         </div> 
        </div> 
        <div class="form-group"> 
         <label class="form-control-label" for="form1-h-message">Enter Message (Optional)</label> 
         @Html.TextAreaFor(x => x.AdditionalMessage, new 
        { 
         @class = "form-control", 
         placeholder = "Enter additional message" 
        }) 
        </div>      
        <div><button type="submit" class="btn btn-primary">Send Job</button></div> 
       </form> 

メールが大成功を送られる

[HttpPost, ActionName("index")][ValidateAntiForgeryToken] 
public async Task<ActionResult> index_post(SendPrintJob obj) 
{ 
     papertypeList(); 
     if (ModelState.IsValid) 
     { 
      var date = DateTime.Now; 
      int dateresult = DateTime.Compare(date, obj.DeliveryDate); 
      if (dateresult > 0) 
      { 
       FlashMessage.Danger("Delivery Date Error: Delivery date entered should be later than todays date!"); 
       return View(obj); 
      } 
      string uploadErrorMsg = string.Empty; 
      string uploadedImageFormat; 
      if(!isValidUpload(obj.Design, out uploadErrorMsg, out uploadedImageFormat)) 
      { 
       FlashMessage.Danger("Upload Error", uploadErrorMsg);      
      } 
      var body = "<p>Print Job<br/><br/>" + 
        "<b>SENDER DETAILS</b><br/>" + 
        "Name: {0}<br/>" + 
        "Email: {1}<br/>" + 
        "Phone Number: {2}<br/><br/>" + 
        "<b>JOB DETAILS</b><br>" + 
        "Delivery Date: {3}<br/>" + 
        "Paper Type: {4}<br/>" + 
        "Paper/Image Size: {5}<br/>" + 
        "Print Copies Required: {6}<br/>" + 
        "Trimming Required: {7}<br/><br/>" + 
        "Additional Message:<br/>" + 
        "{8}<br/><br/>" + 
        "Download email attachment for Design<br/>"; 
      string add_Msg = null; 

      if (string.IsNullOrWhiteSpace(obj.AdditionalMessage)) 
       add_Msg = "No Message!"; 
      else 
       add_Msg = obj.AdditionalMessage; 

      var message = new MailMessage(); 
      message.Body = string.Format(body, obj.Name, obj.email, obj.Phone, 
       obj.DeliveryDate.ToLongDateString(), obj.papertype, obj.paper_imagesize, 
       obj.numberofcopies, obj.triming, add_Msg); 

      message.To.Add(new MailAddress("reciepient's email address here")); 
      message.IsBodyHtml = true;     
      message.Subject = "Print job sent as at - "+date.ToLongDateString()+"/"+date.ToShortTimeString(); 
      if(obj.Design != null)     
       message.Attachments.Add(new Attachment(obj.Design.InputStream, Path.GetFileName(obj.Design.FileName))); 

      var smtp = new SmtpClient(); 
      await smtp.SendMailAsync(message); 
      FlashMessage.Confirmation("Print Job sent successfully."); 
      return RedirectToAction("index"); 
     } 
     return View(obj); 
    } 

コントローラレベルでモデルクラス

public class SendPrintJob 
{ 
    other properties of the model class.. 

    [Required] 
    [DataType(DataType.Date)] 
    public DateTime DeliveryDate { get; set; } 

    [Required] 
    public HttpPostedFileBase Design { get; set; }  

    public string AdditionalMessage { get; set; } 
} 

sfullyが、添付画像は0バイト（S）

Answer 1

これはその答えがhere