private void deleteUserButton_Click(object sender, EventArgs e) { if (userShowcomboBox.SelectedItem == null) { MessageBox.Show("Izbran ni noben uporabnik/član."); } else { //u.id_u, u.name, u.surname, u.tel, u.address, u.notes, l.name, l.postalcode databaseController dbc = new databaseController(); string selectedUser = userShowcomboBox.SelectedItem.ToString();//exception needs to be handled selectedUser = selectedUser.Trim(); string[] UserID = selectedUser.Split('|'); int id_u = Convert.ToInt32(UserID[0].Trim()); selectedUser = UserID[1].Trim();//user's name string surname = UserID[2].Trim(); string tel = UserID[3].Trim(); string address = UserID[4].Trim(); string notes = UserID[5].Trim(); string location_name = UserID[6].Trim(); string location_postalcode = UserID[7].Trim(); Users u = new Users(id_u, selectedUser, surname, tel, address, "", "", "", notes); dbc.DeleteUsers(u); userShowcomboBox.Items.Clear(); OutputUsers(); } }