protected override void UpdateDisplay()
{
base.UpdateDisplay();
InternationalStudent studentCopy = (InternationalStudent)_student;
country.Text = studentCopy.Country;
ielts.Text = Convert.ToString(studentCopy.ItelsScore);
}
protected override void PushData()
{
base.PushData();
InternationalStudent studentCopy = (InternationalStudent)_student;
studentCopy.Country = country.Text;
studentCopy.ItelsScore = Convert.ToSingle(ielts.Text);
}