private void btnOK_Click(object sender, RoutedEventArgs e) { if (register.CheckAccessCode(txtCode.Password)) { Close(); register.MenagerBtn = true; register.WorkerBtn = true; } if (register.count == 0) { Close(); MessageBox.Show("The code is not valid!\nYou no longer have the option to register as a manager.\nYou can only register as a worker!"); register.WorkerRegistry = true; register.MenagerBtn = true; register.WorkerBtn = true; } }