public override async void ViewDidLoad()
        {
            base.ViewDidLoad();

            var bounds = View.Bounds;

            _rssTable = new UITableView(new CGRect(0, 150, bounds.Width, bounds.Height - 100));

            var innerTextField =
                new UITextField(new CGRect(bounds.Width * 0.1, 60, bounds.Width * 0.8, bounds.Width * 0.1))
            {
                BackgroundColor = LightGray
            };

            _feedSearchTextField = new TextField(innerTextField);

//            _button = new UIButton(new CGRect(bounds.Width * 0.1, 100, bounds.Width * 0.8, bounds.Width * 0.1));
//            _button.SetTitle("refresh", UIControlState.Normal);
//            _button.BackgroundColor = LightGray;

            _viewModel.FeedFiltered += feed =>
            {
                _tableSource.TableItems = feed.ToArray();
                _rssTable.ReloadData();
            };

            _tableSource     = new RssTableSource();
            _rssTable.Source = _tableSource;


            Add(_feedSearchTextField);
            Add(_rssTable);
//            Add(_button);

            _bindingList.Property(_viewModel, _ => _.SearchStr)
            .To(_feedSearchTextField.TextProperty())
            .UpdateTarget((t, s) => _feedSearchTextField.SetText((string)t.Target.Value));

            _bindingList.Bind();

            await _viewModel.Load("https://habrahabr.ru/rss/hubs/all");

            _tableSource.TableItems = _viewModel.Feed.ToArray();
            _rssTable.ReloadData();
        }