public partial class ColumnsControl : UserControl
{

        private class ListItem
        {
            private readonly Func<HeaderTypes> _headerTypeGetter;

            public ListItem(Func<HeaderTypes> headerTypeGetter)
                => _headerTypeGetter = headerTypeGetter;

            public string Code { get; set; }
            public string RusName { get; set; }
            public string EngName { get; set; }

            public override string ToString()
            {
                //с помощью делегата определяем, какое поле нужно выводить в листбоксе
                switch (_headerTypeGetter?.Invoke() ?? HeaderTypes.Code)
                {
                    case HeaderTypes.RusName: return RusName;
                    case HeaderTypes.EngName: return EngName;
                    default: return Code;
                }
            }
        }

        private IHeaderType _headerType;
        private IEnumerable<ListItem> _allFields;

        public ColumnsControl()
        {
            InitializeComponent();
            cbColStyle.FillCombo<HeaderTypes>();
            cbColStyle.SelectedIndex = 0;
            cbColStyle.SelectedIndexChanged += (s, a) =>
            {
                if (_headerType == null)
                    return;

                _headerType.HeaderType = (HeaderTypes)cbColStyle.SelectedIndex;

                listAvailable.Update(); //не перерисовывает
                listAvailable.Refresh(); //не перерисовывает
            };            
        }

        public void SetAllFields(IEnumerable<BaseColumns> fields)
        {
            _allFields = fields.Select(f => new ListItem(() => _headerType?.HeaderType ?? HeaderTypes.Code)
            {
                Code = f.Code,
                RusName = f.NameRus,
                EngName = f.NameEng
            });
            listAvailable.Items.AddRange(_allFields.ToArray());
        }
}