Windows Phone 7 - Upload file to FTP server - windows-phone-7

Question

Hy.
I do an application in WP7 which is connet a FTP server. I would like to upload a photo(with photochoosertask).
I wrote a PhotoChooserTask() which I could choose a photo. The program save the photo name(samplephoto01.jpg) and the photo route.
And I wrote a code which send command to FTP server:
public static void Execute(String msg)
{
SocketAsyncEventArgs socketEventArg = new SocketAsyncEventArgs();
Byte[] cmd = Encoding.UTF8.GetBytes((msg + "\r\n").ToCharArray());
socketEventArg.SetBuffer(cmd, 0, cmd.Length);
socket.SendAsync(socketEventArg);
}
This code i can chose the photo:
public void SelectAndUpLoad()
{
PhotoChooserTask p = new PhotoChooserTask();
p.Completed += new EventHandler<PhotoResult>(pt_Completed);
p.ShowCamera = true;
p.Show();
}
void pt_Completed(object sender, PhotoResult e)
{
if (e.TaskResult == TaskResult.OK)
{
BitmapImage img = new BitmapImage();
img.SetSource(e.ChosenPhoto);
MediaLibrary library = new MediaLibrary();
string PhotoPath = e.OriginalFileName;
// MessageBox.Show(PhotoPath);
for (int i = 0; i < library.Pictures.Count; i++)
{
Stream s = library.Pictures[i].GetImage();
if (s.Length == e.ChosenPhoto.Length)
{
string filename = library.Pictures[i].Name;
MessageBoxResult m = MessageBox.Show(filename, "Upload?", MessageBoxButton.OKCancel);
if (m == MessageBoxResult.OK)
{
Ftp.UploadFile(PhotoPath);
}
else
{
return;
}
break;
}
}
}
}
And this is the code whic i would like to upload the file:
public static void UploadFile(string file)
{
FileStream stream = new FileStream(file, FileMode.Open);
socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
Execute("STRO " + file);
stream.Seek(0, SeekOrigin.Begin);
stream.Close();
}
But when i use the UploadFile(); method the program answer this:
MethodAccessException was unhandled
This code:
.
.
Ftp.UploadFile(PhotoPath);
}
else
{ //MethodAccessException
return;
}
break;
}
What was the wrong? Thank you!
I rewrote this code with IsolatedStorage to this:
for (int i = 0; i < library.Pictures.Count; i++)
{
Stream s = library.Pictures[i].GetImage();
if (s.Length == e.ChosenPhoto.Length)
{
string filename = library.Pictures[i].Name;
MessageBoxResult m = MessageBox.Show(filename, "Upload?", MessageBoxButton.OKCancel);
if (m == MessageBoxResult.OK)
{
IsolatedStorageFile iss = IsolatedStorageFile.GetUserStoreForApplication();
IsolatedStorageFileStream fs = iss.OpenFile(PhotoPath, FileMode.Open);
Ftp.UploadFile(fs, filename);
fs.Close();
}
else
{
return;
}
break;
}
}
And the UploadFile() method:
public static void UploadFile(IsolatedStorageFileStream file, string RemoteFile)
{
SocketAsyncEventArgs socketEventArg = new SocketAsyncEventArgs();
int bytes;
socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
Execute("STRO " + RemoteFile);
file.Seek(0, SeekOrigin.Begin);
while ((bytes = file.Read(buffer, 0, buffer.Length)) > 0)
{
socketEventArg.SetBuffer(buffer, bytes, 0);
socket.SendAsync(socketEventArg);
}
}
But i get an exception in this source:
IsolatedStorageFileStream fs = iss.OpenFile(PhotoPath, FileMode.Open);
The exception is: IsolatedStorageException was unhadnled.
What is wrong?

Answer 1

I think your problem lies in the line:
FileStream stream = new FileStream(file, FileMode.Open);
You can't open files this way on WP7. To get a stream to a file, you can either open it from the Isolated Storage (given that the file is stored there), or use the stream provided by a built-in method.
In your case, you have the stream with the property e.ChosenPhoto. Why don't you use it directly?
public static void UploadFile(Stream stream, string file)
{
socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
Execute("STRO " + file);
stream.Seek(0, SeekOrigin.Begin);
stream.Close();
}
Then call UploadFile using e.ChosenPhoto as the first argument.