Windows Phone 7 how to upload picture to server

Question

My code wants to upload a picture to a server, as below, but it always fails. Do you know why?

   public static void SendRequest(System.Text.StringBuilder sReq, byte[] sbyteData, Action<UpLoadPicData, int> onEventResponse = null, Action onFinally = null)
    {
        WebClient wc = new WebClient();

        wc.OpenWriteCompleted += new OpenWriteCompletedEventHandler(wc_OpenWriteCompleted);
        Uri u = new Uri(sReq.ToString());
        wc.Headers[HttpRequestHeader.ContentLength] = sReq.Length.ToString();
        wc.Headers[HttpRequestHeader.Accept] = "*/*";
        wc.Headers[HttpRequestHeader.ContentType] = "application/octet-stream";

        wc.OpenWriteAsync(u, "POST", sbyteData);
    }

    public static void wc_OpenWriteCompleted(object sender, OpenWriteCompletedEventArgs e)
    {
        if (e.Error == null)
        {
            object[] objArr = e.UserState as object[];
            byte[] fileContent = e.UserState as byte[];

           Stream outputStream = e.Result;
           outputStream.Write(fileContent, 0, fileContent.Length);
           outputStream.Flush();
           outputStream.Close();

        }
    }

How is it failing? Is there an exception? – Matt Bridges Mar 15 '11 at 12:09 — Matt Bridges, Mar 15 '11 at 12:09

score 3 · Answer 1 · answered Nov 09 '11 at 09:51

void photoChooserTask_Completed(object sender, PhotoResult e)
    {
        if (e.TaskResult == TaskResult.OK)
        {
            System.Windows.Media.Imaging.BitmapImage bmp = new System.Windows.Media.Imaging.BitmapImage();
            bmp.SetSource(e.ChosenPhoto);
            image1.Source = bmp;
            byte[] sbytedata = ReadToEnd(e.ChosenPhoto);
            string s = sbytedata.ToString();
            WebClient wc = new WebClient();
            Uri u = new Uri("url here");
            wc.OpenWriteCompleted+=new OpenWriteCompletedEventHandler(wc_OpenWriteCompleted);
            wc.OpenWriteAsync(u, "POST", sbytedata);

        }
    }
    public static void wc_OpenWriteCompleted(object sender, OpenWriteCompletedEventArgs e)
    {
        if (e.Error == null)
        {
            object[] objArr = e.UserState as object[];
            byte[] fileContent = e.UserState as byte[];

            Stream outputStream = e.Result;
            outputStream.Write(fileContent, 0, fileContent.Length);
            outputStream.Flush();
            outputStream.Close();
            string s = e.Result.ToString(); ;

        }
    }
    public static byte[] ReadToEnd(System.IO.Stream stream)
    {
        long originalPosition = stream.Position;
        stream.Position = 0;

        try
        {
            byte[] readBuffer = new byte[4096];

            int totalBytesRead = 0;
            int bytesRead;

            while ((bytesRead = stream.Read(readBuffer, totalBytesRead, readBuffer.Length - totalBytesRead)) > 0)
            {
                totalBytesRead += bytesRead;

                if (totalBytesRead == readBuffer.Length)
                {
                    int nextByte = stream.ReadByte();
                    if (nextByte != -1)
                    {
                        byte[] temp = new byte[readBuffer.Length * 2];
                        Buffer.BlockCopy(readBuffer, 0, temp, 0, readBuffer.Length);
                        Buffer.SetByte(temp, totalBytesRead, (byte)nextByte);
                        readBuffer = temp;
                        totalBytesRead++;
                    }
                }
            }

            byte[] buffer = readBuffer;
            if (readBuffer.Length != totalBytesRead)
            {
                buffer = new byte[totalBytesRead];
                Buffer.BlockCopy(readBuffer, 0, buffer, 0, totalBytesRead);
            }
            return buffer;
        }
        finally
        {
            stream.Position = originalPosition;
        }
    }

I used your code... and it worked.. i have also attached the convert to byte[] from image source to this.. the image is taken from gallery

Although do note that there is no response to show if the image is uploaded.. while it is infact uploaded to the server in the background. — Confused_alot, Nov 09 '11 at 09:52

score 1 · Answer 2 · edited May 23 '17 at 12:04

1

Doing this with WebClient will be very tricky (I'm not sure if it's even possible) on the phone. Use HttpWebRequest instead.

Have a look at these other questions on the same subject:

Uploading an image using C# and WebRequest?
and
Upload files with HTTPWebrequest (multipart/form-data)

edited May 23 '17 at 12:04

Community

1
1

answered Mar 15 '11 at 12:30

Matt Lacey

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I have tried HttWebRequest, alwasy failure, with Error = {"The remote server returned an error: NotFound."} – Eric Mar 16 '11 at 09:01
I noticed there are "Referer" item in the http header, I don't why. – Eric Mar 16 '11 at 09:02

Windows Phone 7 how to upload picture to server

2 Answers2

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