protected new SortedBindingList <NotaPracticasInfo> Localize(FilterItem item)
        {
            SortedBindingList <NotaPracticasInfo> list = null;
            NotaPracticasList sourceList = null;

            switch (FilterType)
            {
            case IFilterType.None:
                if (List == null)
                {
                    MessageBox.Show(Face.Resources.Messages.NO_RESULTS);
                    return(null);
                }
                sourceList = List;
                break;

            case IFilterType.Filter:
                if (FilteredList == null)
                {
                    MessageBox.Show(Face.Resources.Messages.NO_RESULTS);
                    return(null);
                }
                sourceList = FilteredList;
                break;

            default:
                sourceList = List;
                break;
            }

            if (item.FilterProperty == IFilterProperty.All)
            {
                FCriteria criteria = GetCriteria(string.Empty, item.Value, null, item.Operation);
                list = sourceList.GetSortedSubList(criteria, _properties_list);
            }
            else
            {
                FCriteria criteria = GetCriteria(item.Column, item.Value, null, item.Operation);
                list = sourceList.GetSortedSubList(criteria, _properties_list);
            }

            if (list.Count == 0)
            {
                MessageBox.Show(Face.Resources.Messages.NO_RESULTS);
                return(sourceList.GetSortedList());
            }

            DatosSearch.DataSource = list;
            DatosSearch.MoveFirst();

            AddFilterLabel(item);

            return(list);
        }