Lucene.Net.LukeNet.OverviewTabPage.ShowTopTerms C# (CSharp) Метод

        internal void ShowTopTerms()
        {
            int nDoc = (int)domainTerms.SelectedItem;
            ListView.CheckedListViewItemCollection fields = listFields.CheckedItems;

            String[] selectedFields;
            if (fields == null || fields.Count == 0)
            {
                selectedFields = _indexFields;
            }
            else
            {
                selectedFields = new String[fields.Count];
                int i = 0;
                foreach (ListViewItem item in fields)
                {
                    // item.Text without "<", ">"
                    selectedFields[i++] = item.Text.Substring(1, item.Text.Length - 2);
                }
            }

            try
            {
                TermInfo[] termInfos = HighFreqTerms.GetHighFreqTerms(_luke.Directory, null, nDoc, selectedFields);

                listTerms.BeginUpdate();
                listTerms.Items.Clear();

                if (termInfos == null || termInfos.Length == 0)
                {
                    ListViewItem noResults = new ListViewItem();
                    noResults.SubItems.AddRange(new String[] { "", "", _luke.resources.GetString("NoResults") });
                    listTerms.Items.Add(noResults);
                    return;
                }

                for (int i = 0; i < termInfos.Length; i++)
                {
                    ListViewItem item = new ListViewItem((i + 1).ToString());
                    item.SubItems.AddRange(
                        new String[]{
                            termInfos[i].DocFreq.ToString(),
                            " <" + termInfos[i].Term.Field() + "> ",
                            termInfos[i].Term.Text()});

                    listTerms.Items.Add(item);
                }
            }
            catch (Exception e)
            {
                _luke.ErrorMessage(e.Message);
            }
            finally
            {
                listTerms.EndUpdate();
            }
        }