public void LoadPhotoResources(string relativeUriString)
        {
            Uri uri = new Uri(relativeUriString, UriKind.Relative);
            StreamResourceInfo sri = Application.GetResourceStream(uri);
            BitmapImage bi = new BitmapImage();
            bi.SetSource(sri.Stream);
            WriteableBitmap wb = new WriteableBitmap(bi);
            imageElement.Source = target; //<image>
            wb = null;
            bi = null;
            sri = null;
        }