什么是php代码检索文件发送使用windows phone 8 Restsharp

这里是restsharp代码，请帮助我检索发送的文件的PHP代码，如果它是在第一个地方发送，我真的不知道。请告诉我，如果我的c#代码是正确的，它真的发送文件或不。代码成功发送了参数，但对于文件我不知道，我不能告诉，直到我有一个坚实的PHP代码，可以处理请求。我从http://nediml.wordpress.com/2012/05/10/uploading-files-to-remote-server-with-multiple-parameters/获取了代码问候和感谢

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        CameraCaptureTask cameraCapture = new CameraCaptureTask();
        cameraCapture.Completed += cameraCapture_Completed;
        cameraCapture.Show();
    }
    private void cameraCapture_Completed(object sender, PhotoResult e)
    {
        if (e.TaskResult != TaskResult.OK)
            return;
        string userId = tb.Text;
        //preparing RestRequest by adding server url, parameteres and files...
        RestRequest request = new RestRequest("http://server/page.php", Method.POST);
        request.AddParameter("id", userId);
        request.AddFile("image", ReadToEnd(e.ChosenPhoto), "photo.jpg", "image/pjpeg");

        //calling server with restClient
        RestClient restClient = new RestClient();
        restClient.ExecuteAsync(request, (response) =>
        {
            if (response.StatusCode == HttpStatusCode.OK)
            {
                //upload successfull
                MessageBox.Show("Upload completed succesfully...'n" +      response.Content);
            }
            else
            {
                //error ocured during upload
                MessageBox.Show(response.StatusCode + "'n" + response.StatusDescription);
            }
        });
    }
    public 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;
        }
    }