Question

I am downloading images from skydrive folder. When the image is downloaded , I need to save it in a folder called ‘pictures’

But how I can get the name of the file downloaded? I tried the next code but fs returns null

private void download()
        {
            if (ControlBackup_ID != null)
            {               
                foreach (string it in contenidoSkyPic)
                {
                    //MessageBox.Show (it);
                    infoTextBlock3.Text = "Downloading backup pictures..wait...";

                    client.DownloadAsync(it + "/content");
                    client.DownloadCompleted += new EventHandler<LiveDownloadCompletedEventArgs>(client_DownloadCompleted);
                }               
            }
            else
                MessageBox.Show("Backup file of pictures doesn't exist!", "Error", MessageBoxButton.OK);
        }



void client_DownloadCompleted(object sender, LiveDownloadCompletedEventArgs e)
    {
        if (e.Error == null)
        {
             Stream stream = e.Result; //Need to write this into IS
             FileStream fs = stream as FileStream;

             if (fs != null)
             {
                 try
                 {
                     using (IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication())
                     {
                         using (IsolatedStorageFileStream fileStream = myIsolatedStorage.OpenFile("pictures\\" + fs.Name, FileMode.Create))
                         {
                             stream.CopyTo(fileStream);
                             cantImatges_progreso_down += 1;
                         }
                     }
                 }
                 catch { }

                 if (cantImatges_progreso_down == contenidoSkyPic.Count())
                 {
                     infoTextBlock3.Text = "Restore pictures completed!";
                 }
             }

        }
        else
        {
            // process error  
            MessageBox.Show("Restore pictures failed.", "Failure", MessageBoxButton.OK);
        }

        client.DownloadCompleted -= client_DownloadCompleted;            


    }

Answer 1

Finally, I have found this solution. I have seen that I can use “userstate” to pass filename

Solution:

When i scann skydrive folder, now I store ID and filename:

List<KeyValuePair<string, string>> contenidoSkyPic ;

 void getFilesImatges_GetCompleted(object sender, LiveOperationCompletedEventArgs e)
 {
     List<object> data = (List<object>)e.Result["data"];

            contenidoSkyPic = new List<KeyValuePair<string, string>>();
            contenidoSkyPic.Clear();


            foreach (IDictionary<string, object> content in data)
            {
                contenidoSkyPic.Add(new KeyValuePair<string, string>((string)content["id"], (string)content["name"]));   
            }


}

Then, “Download” will be:

private void download()
        {
            if (ControlBackup_ID != null)
            {               
                foreach (string it in contenidoSkyPic)
                {
                    //MessageBox.Show (it);
                    infoTextBlock3.Text = "Downloading backup pictures..wait...";


LiveConnectClient client = new LiveConnectClient(session);
client.DownloadCompleted += new EventHandler<LiveDownloadCompletedEventArgs>(client_DownloadImatgesCompleted);
client.DownloadAsync(it.Key + "/content", it.Value );

                }               
            }
            else
                MessageBox.Show("Backup file of pictures doesn't exist!", "Error", MessageBoxButton.OK);
        }

when client_DownloadCompleted is called whenever a download completes and I can get the name of each file:

void client_DownloadCompleted(object sender, LiveDownloadCompletedEventArgs e)
    {
        if (e.Error == null)
        {
             Stream stream = e.Result; //Need to write this into IS
            string _namePicture = e.UserState.ToString();


                 try
                 {
                     using (IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication())
                     {
                         using (IsolatedStorageFileStream fileStream = myIsolatedStorage.OpenFile("pictures\\" + _namePicture , FileMode.Create))
                         {
                             stream.CopyTo(fileStream);
                             cantImatges_progreso_down += 1;
                         }
                     }
                 }
                 catch { }

                 if (cantImatges_progreso_down == contenidoSkyPic.Count())
                 {
                     infoTextBlock3.Text = "Restore pictures completed!";
                 }
             }


        client.DownloadCompleted -= client_DownloadCompleted;            


    }