internal void Download()
{
if (SelectedPhoto == null)
{
return;
}
LiveConnectClient downloadClient = new LiveConnectClient(App.Session);
downloadClient.BackgroundDownloadCompleted +=
new EventHandler <LiveOperationCompletedEventArgs>(downloadClient_BackgroundDownloadCompleted);
string path = SelectedPhoto.ID + "/content";
Uri downloadLocation = new Uri("/shared/transfers/" + SelectedPhoto.Title, UriKind.RelativeOrAbsolute);
string userState = SelectedPhoto.ID; // arbitrary string to uniquely identify the request.
downloadClient.BackgroundDownload(path, downloadLocation, userState);
}