private void CheckInButton_Click(object sender, EventArgs e)
{
if (InputValidator.IsIntValue(studentNumberTextBox.Text))
{
int id = int.Parse(studentNumberTextBox.Text);
if (studentManager.IsCheckedIn(id))
{
var s = studentManager.GetStudent(id);
attendanceManager.UpdateDate(id);
MessageBox.Show($"Welcome back {s.FirstName}, this is visit number {s.TotalCheckIns}!", "Checked-in");
}
else
{
MessageBox.Show("Could not find this student number. Register or try again.", "Invalid Input");
}
studentNumberTextBox.Text = "";
}
else
{
MessageBox.Show("Please input your student number or register.", "Invalid Input");
}
}