protected override void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
SqlConnection connection = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["connectionString"]);
AttendanceMapper mapper = new AttendanceMapper(connection);
AttendanceService service = new AttendanceService(mapper);
MainWindow view = new MainWindow(service);
view.Show();
}
public AttendanceService(AttendanceMapper mapper) {
this.mapper = mapper;
}