private void MakeClientFromSession(LiveConnectSession session)
		{
			// Creates the client.
			_liveClient = new LiveConnectClient(session);

			// Adds event handlers.
			_liveClient.DownloadCompleted += new EventHandler<LiveDownloadCompletedEventArgs>(OnLiveClientDownloadCompleted);
			_liveClient.BackgroundDownloadCompleted += new EventHandler<LiveOperationCompletedEventArgs>(OnLiveClientBackgroundDownloadCompleted);
			_liveClient.GetCompleted += new EventHandler<LiveOperationCompletedEventArgs>(OnLiveClientGetCompleted);

			// Makes the client download even when on battery, or cellular data scheme.
			_liveClient.BackgroundTransferPreferences = BackgroundTransferPreferences.AllowCellularAndBattery;

			// Attaches downloads that have been running in the background
			// while the app was not active.
			_liveClient.AttachPendingTransfers();

			// Notify we're linked.
			IsLinked = true;
		}
 //evento da sessão do SkyDrive
 private void signInButton1_SessionChanged(object sender, LiveConnectSessionChangedEventArgs e)
 {
     animaProgressBar(true);
     try
     {
         if (e.Status == LiveConnectSessionStatus.Connected)
         {
             txtbStatus.Text = "Atualizando informações da conta...";
             txtbConectado.Text = "Conectado como:";
             txtbInfo.Visibility = Visibility.Collapsed;
             client = new LiveConnectClient(e.Session);
             client.AttachPendingTransfers();
             client.GetCompleted += new EventHandler<LiveOperationCompletedEventArgs>(client_GetCompleted);
             client.GetAsync("me");
         }
         else
         {
             ContentList.Clear();
             lstFolders.ItemsSource = null;
             txtbConectado.Text = "Desconectado";
             txtbInfo.Visibility = Visibility.Visible;
             txtbStatus.Text = "";
             txtbTitulodapágina.Text = "skydrive";
             animaProgressBar(false);
         }
     }
     catch (Exception)
     {
         animaProgressBar(false);
         MessageBox.Show("Não conseguimos verificar a conexão com o SkyDrive, tente novamente!");
     }
     
 }