MVC-Statusanzeige per http-Post

Ich bin mit Microsoft MVC, die ich geschrieben habe, eine Ansicht, die uploads von Dateien auf die Amazon S3 API.
Ich würde gerne eine Fortschrittsanzeige in meinen Augen zu zeigen, den Fortschritt der Verarbeitung, dass die Aktion in meinem controller nicht mit dem hochladen der Datei im besonderen.

Habe ich versucht, ein paar JQUERY - /AJAX-Uploader, aber jedes mal, wenn ich lose den Wert der HttpPostedFileBase und den Wert der Datei null ist.

Habe ich im Prinzip finden müssen einen Fortschrittsbalken-Funktion, unterstützt Post " und " multipart/form-data.

Code unten

ASPX

<%using (Html.BeginForm("Upload", "Tracks", FormMethod.Post, new { enctype = "multipart/form-data" }))
{%>
  <label for="BandName">Artist</label> 
       <%=Html.TextBox("Artists") %><%:Html.ValidationMessage("Artist","*")%>
        <div class="clearfix">
        </div>
        <label for="SongName">Song Title
        </label>
          <%=Html.TextBox("SongName") %><%:Html.ValidationMessage("SongName","*")%>
        <div class="clearfix">
        </div>
         <label for="SongName">Genre(s)
        </label>
          <%=Html.TextBox("Genres") %><%:Html.ValidationMessage("Genres","*")%>
        <div class="clearfix">
        </div>
        <label for="SongName">Mood(s)
        </label>
          <%=Html.TextBox("Moods") %><%:Html.ValidationMessage("Moods","*")%>
        <div class="clearfix">
        </div>

        <%:Html.Label("Country") %><%=Html.DropDownListFor(x => x.OrigCountryOptions,Model.OrigCountryOptions)%> <br /><br />
          <div class="clearfix">
        </div>
        <label for="FileName">File
        </label>
         <input type="file" name="SongFile" id="SongFile"/>
        <div class="clearfix">
        </div>


        <input type="submit" value="Submit" />
<%
   }
   %>

Controller-action

  [Authorize]   
  [AcceptVerbs(HttpVerbs.Post)]
  public ActionResult Upload(Track track, Guid origcountryoptions, HttpPostedFileBase SongFile)
    {

        DateTime timestamp = DateTime.Now;
        EncryptManager _encryptManager = new EncryptManager();
        EmailService _emailService ;

        string strMySignature = _encryptManager.GetSignature(
               cAWSSecretKey,
               "PutObjectInline",
               timestamp);

        AmazonS3 amazonS3 = new AmazonS3();

        string filename = SongFile.FileName;

        int FileLen = SongFile.ContentLength;
        byte[] buf = new byte[SongFile.ContentLength];
        int data = SongFile.InputStream.Read(buf, 0, FileLen);



        if (FileLen > 100000000)
            ModelState.AddModelError("LargeFile", "File Size is limited to 10mb");
        if (filename.Substring(filename.Length - 3, 3).ToUpper() !=  "MP3")
            ModelState.AddModelError("FileFormat", "Upload is limited to MP3's");
        if (String.IsNullOrEmpty(track.Artists))
            ModelState.AddModelError("Artist", "Please enter the artist name.");
        if (String.IsNullOrEmpty(track.Genres))
            ModelState.AddModelError("Genres", "Please enter the Genre(s).");
        if (String.IsNullOrEmpty(track.Moods))
            ModelState.AddModelError("Moods", "Please enter the Moods(s).");
        if (String.IsNullOrEmpty(track.Songname))
            ModelState.AddModelError("SongName", "Please enter the Song Name.");

        MetadataEntry[] metadata = new MetadataEntry[2];
        metadata[0] = new MetadataEntry();
        metadata[0].Name = "Content-Type";
        metadata[0].Value = SongFile.ContentType;
        metadata[1] = new MetadataEntry();
        metadata[1].Name = "filename";
        metadata[1].Value = filename;

        PutObjectResult result = amazonS3.PutObjectInline("PayForPlay.Tracks",
                                     cAWSSecretKey, metadata, buf,
                                     SongFile.ContentLength, null, StorageClass.STANDARD,
                                     true, cAWSAccessKeyId, timestamp,
                                     true, strMySignature, null);



        if (ModelState.IsValid)
        {


            using (var scopaddTrack = new UnitOfWorkScope())
            {
                var person = _personService.GetPerson(SessionWrapper.PersonId);

                Country origCountry = _lookupService.GetCountry(origcountryoptions);
                var newtrack = _trackService.CreateTrack(person, origCountry, track.Artists,
                                                         track.Moods, track.Genres, track.Songname);
                scopaddTrack.Commit();

                try
                {

                    var defaultClient = new DefaultEmailClient(ConfigurationManager.AppSettings["SMTPServer"],
                        ConfigurationManager.AppSettings["SMTPUsername"],
                        ConfigurationManager.AppSettings["SMTPPassword"]);
                    var service = new EmailService(defaultClient);

                    var email = new Email
                                    {
                                        ToAddress = ConfigurationManager.AppSettings["ToAddress"],
                                        ToName = ConfigurationManager.AppSettings["ToAddress"],
                                        FromAddress = ConfigurationManager.AppSettings["FromAddrress"],
                                        FromName = ConfigurationManager.AppSettings["FromAddrress"],
                                        Subject = "New Track Added",
                                        Body = "<html><body><h1>Wesbank Email Service Working</h1></body></html>",
                                        IsHtml = true
                                    };
                    service.SendEmail(email);

                    email.Subject = "Wesbank Email Service - Async Sorted";
                    service.SendAsycnEmail(email);

                }
                catch (Exception exception)
                {
                }

            }






            return RedirectToAction("List");
        }
        else
        {
            var countryoptions = _lookupService.GetAllCountries();
            var tracklist = _trackService.GetAllTracksByPerson(SessionWrapper.PersonId);
            var viewmodel = new TracksViewModel(tracklist, countryoptions);
            return View("Add", viewmodel);
        }


    }

InformationsquelleAutor StantonR | 2011-02-14