private void saveToolStripMenuItem_Click(object sender, EventArgs e) { if (bibRecordsCurrent.getRecords().Count == 0) { MessageBox.Show("There is no data to save."); return; } SaveFileDialog sfd = new SaveFileDialog(); sfd.Filter = "Bib File (*.bib)| *.bib"; DialogResult result = sfd.ShowDialog(); if (result == DialogResult.OK) { if (sfd.FileName.Substring(sfd.FileName.LastIndexOf(".") + 1).Equals("bib")) { FileManager fileManager = new FileManager(); string data = ""; foreach (BibTeXRecord bibRecord in bibRecordsCurrent.getRecords()) { data += bibRecord.toString(); } fileManager.saveBibFile(sfd.FileName, data); MessageBox.Show("Successfully saved."); } else { MessageBox.Show("Wrong extension. Please select .bib file."); } } }