SkydriveUpdateFolder.cs

private async void UpdateButton_Click(object sender, RoutedEventArgs e)
{
    try
    {
        if (FolderBox.SelectedItem != null)
        {
            Dictionary<string, object> updatefolder = new Dictionary<string, object>();
            updatefolder.Add("name", "updatefolder");
            //PutAsync中傳入要更新的資料夾ID
            LiveOperationResult operationresult = await liveClient.PutAsync((FolderBox.SelectedItem as ListBoxItem).Tag.ToString(), updatefolder);                    
            MessageDialog msg = new MessageDialog("Folder updated");
            await msg.ShowAsync();
        }
    }
    catch (LiveConnectException ex)
    {
        MessageDialog msg = new MessageDialog(ex.Message);
        msg.ShowAsync();
    }
}