private void LoginButton_Click(object sender, EventArgs e)
{
if (!AbsenceTracker.Login(UsernameTextBox.Text, PasswordTextBox.Text))
{
MessageBox.Show("User not found");
}
AbsencesBindingList = new BindingList <AbsenceModel>(AbsenceTracker.CurrentUser.Absences);
AbsencesDataGridView.DataSource = AbsencesBindingList;;
RefreshForm();
}
