protected void Handle_FinishedPickingMedia (object sender, UIImagePickerMediaPickedEventArgs e)
    {
        bool isImage = false;
        switch(e.Info[UIImagePickerController.MediaType].ToString()) {
        case "public.image":
            isImage = true;
            break;
        }

        // if it was an image, get the other image info
        if(isImage) {
            // get the original image
            var referenceUrlTest = e.Info [UIImagePickerController.ReferenceUrl] as NSUrl;
            _originalImage = e.Info[UIImagePickerController.OriginalImage] as UIImage;
            if(_originalImage != null) {
                // do something with the image
                Console.WriteLine ("ReferenceURL: "+referenceUrlTest.ToString ());
            }
        }
    }