public override void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
        {
            NoteAdapterViewHolder vh = holder as NoteAdapterViewHolder;

            vh.NoteText.Text = notes[position].Text;
            vh.NoteDate.Text = notes[position].Timestamp;
        }
        public override RecyclerView.ViewHolder OnCreateViewHolder(ViewGroup parent, int viewType)
        {
            View itemView            = LayoutInflater.From(parent.Context).Inflate(Resource.Layout.list_item, parent, false);
            NoteAdapterViewHolder vh = new NoteAdapterViewHolder(listener, itemView);

            return(vh);
        }