private void buttonLoadTeams_Click(object sender, EventArgs e) { try { if (!connectionWithDatabase.isConnected()) { connectionWithDatabase.OpenConnection(); } connectionWithDatabase.loadMatches(removeMatchListBox); } catch (Exception es) { MessageBox.Show("Error 404 in adding Team. Check DataBaseConnection \r\n" + es.Message + "\r\n" + es.InnerException.Message); } finally { connectionWithDatabase.CloseConnection(); } }