private void buttonRemove_Click(object sender, EventArgs e) { if (listBoxTypeOfCompanies.SelectedIndex != -1) { string typeOfCompany = listBoxTypeOfCompanies.SelectedItem.ToString(); var directoryTypeOfCompany = _qt.GetDirectoryTypeOfCompany(typeOfCompany); if (IsValidateRemove(directoryTypeOfCompany)) { _qt.RemoveDirectoryTypeOfCompany(directoryTypeOfCompany); _qt.Save(); FormFill(); } } }