AbstractCompare.Form1.button2_Click C# (CSharp) Method

        private void button2_Click(object sender, EventArgs e) //zobraz abstrakt pre dbpediu
        {
            if (textBox2.Text.Equals(""))
            {
                MessageBox.Show("Zadajte cestu k suboru!");
            }
            else
            {
                if (textBox3.Text.Equals(""))
                {
                    MessageBox.Show("Vyplňte políčko: Zadajte hľadaný abstrakt!");
                }
                else
                {
                    //ak nemam este vyskladany index z mojho suboru
                    if (!MamIndexDBPedia)
                    {
                        directoryDBPedia = FSDirectory.Open(new DirectoryInfo(Environment.CurrentDirectory + "\\DBPediaIndex"));
                        analyzerDBPedia = new StandardAnalyzer(Version.LUCENE_29);
                        IndexWriter writer = new IndexWriter(directoryDBPedia, analyzerDBPedia, true, IndexWriter.MaxFieldLength.UNLIMITED);

                        string riadok;
                        cestaSuborDBPedia = textBox2.Text;

                        System.IO.StreamReader subor = new System.IO.StreamReader(cestaSuborDBPedia);

                        while ((riadok = subor.ReadLine()) != null)
                        {
                            string[] poleAbstrakt = riadok.Split(new string[] { ";|?" }, StringSplitOptions.None);

                            //ideme indexovat kazdy jeden riadok ktory sme si predtym podelili na title a abstrakt
                            Document doc = new Document();

                            doc.Add(new Field("Nadpis", poleAbstrakt[0], Field.Store.YES, Field.Index.ANALYZED));
                            doc.Add(new Field("Abstrakt", poleAbstrakt[1], Field.Store.YES, Field.Index.NO));

                            writer.AddDocument(doc);

                        }
                        //zavrieme a aktualizujeme zapisovac a ostatne srandy
                        MamIndexDBPedia = true;
                        writer.Optimize();
                        //writer.Commit();
                        writer.Close();
                        MessageBox.Show("Indexovanie súboru prebehlo úspešne!");
                    }

                    if (MamIndexDBPedia)
                    {
                        //otvorenie directory na citanie indexov a definovanie hladaca 
                        IndexReader indexReader = IndexReader.Open(directoryDBPedia, true);
                        Searcher indexSearch = new IndexSearcher(indexReader);

                        //vytvorime samotny vyhladavac, definujeme verziu a pole v ktorom chceme hladat, odovzdame dopyt zadany na vstupe 
                        QueryParser queryParser = new QueryParser(Version.LUCENE_29, "Nadpis", analyzerDBPedia);
                        Query query = queryParser.Parse(textBox3.Text);

                        //samotne hladanie a naplnenie struktury pre vysledky
                        TopDocs resultDocs = indexSearch.Search(query, 20);

                        //najdene vysledky hladania
                        var hits = resultDocs.scoreDocs;

                        richTextBox2.Text = "";
                        abstraktDBpedia = "";

                        textBox5.Text = resultDocs.totalHits.ToString();

                        if (resultDocs.totalHits > 0)
                        {
                            foreach (var hit in hits)
                            {
                                var documentFromSearcher = indexSearch.Doc(hit.doc);

                                richTextBox2.Text += documentFromSearcher.Get("Nadpis") + ": " + documentFromSearcher.Get("Abstrakt") + "\n";

                                abstraktDBpedia += documentFromSearcher.Get("Abstrakt") + " ";
                            }
                        }
                        else
                        {
                            richTextBox2.Text = "Nenasla sa ziadna zhoda";
                        }
                    }
                }
            }
        }