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();
}
}
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
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)
