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I am trying to upload photos form Windows phone (mango) to facebook with BackgroundTransferRequest object. This is because I want to upload photos even if the app is not running.

I am using facebook C# SDK to get access token etc and which works great but to upload using this, we need to keep the APP active.

I can use fiddler and create a Post request with access token and upload the image to facebook to a album. https://graph.facebook.com/178040612256938/Photos/?access_token=AAACEdEose0cBAA4p0Ozqj0H39RP2tGyxdq0LAxoADyBZCPgjgrXMwU93VAOVkulemC3ZC5lVZCTiJ3rYeFXtM67tYNEZBvPQmasbT9AvX

Now, here is my code that I took off of sample here - http://msdn.microsoft.com/en-us/library/hh202959(v=vs.92).aspx

I am not sure how to add headers that fiddler adds OR how to use this for uploading photos to FB. getting 400 as response. Currently the following code can upload photo to my WCF service.

also looked at - BackgroundTransferRequest WP7

IsolatedStorageFileExtensions.SavePicture(Path.Combine(TransfersFiles, picture.FileName), picture.Data);

        string fbURL = @"https://graph.facebook.com/106216062727932/Photos/?access_token=AAACEdEose0cBAA4p0Ozqj0H39RP2tGyxdq0LAxoADyBZCPgjgrXMwU93VAOVkulemC3ZC5lVZCTiJ3rYeFXtM67tYNEZBvPQmasbT9AvD";

        var transferRequest = new BackgroundTransferRequest(new Uri(fbURL, UriKind.Absolute));


        if (!_wifiOnly)
        {
            transferRequest.TransferPreferences = TransferPreferences.AllowCellular;
        }
        if (!_externalPowerOnly)
        {
            transferRequest.TransferPreferences = TransferPreferences.AllowBattery;
        }
        if (!_wifiOnly && !_externalPowerOnly)
        {
            transferRequest.TransferPreferences = TransferPreferences.AllowCellularAndBattery;
        }

        //this is the place to upload to Facebook

        transferRequest.Method = "POST";

        //_OLD transferRequest.UploadLocation = new Uri(TransfersFiles + @"\" + picture.FileName, UriKind.Relative);

        transferRequest.UploadLocation = new Uri(TransfersFiles + @"\" + picture.FileName, UriKind.Relative);

        string boundary = DateTime.Now.Ticks.ToString("x", CultureInfo.InvariantCulture);
        //---



        transferRequest.TransferStatusChanged += OnTransferStatusChanged;
        transferRequest.TransferProgressChanged += OnTransferProgressChanged;

        BackgroundTransferService.Add(transferRequest);
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Amol Wankhede
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  • How long was the access_token granted for? If you are receiving a 400, it might be because the access_token expired (Side note, **don't** post your access_token as part of your question) – Richard Szalay Jan 03 '12 at 22:10
  • Thanks for the comment. the access token is fresh - the same access token works with Fiddler! PS- the access token shared here is not valid - I changed few letters – Amol Wankhede Jan 04 '12 at 05:40
  • BUT you need to make sure there isn't a timestamp that is part of the generation of the URL. I don't see anything like that in your URI, so you are probably safe. I ran into the URL timing out with the DropBox API (which is also an oAuth variant), so be aware that it is an issue.. – DevTheo Jan 04 '12 at 18:01

0 Answers0