protected override void PushData()
        {
            base.PushData();
            ClsInternationalStudent lcStudent = (ClsInternationalStudent)_Student;

            lcStudent.Country    = txtCountry.Text;
            lcStudent.IELTSScore = Convert.ToSingle(txtIELTS.Text);
        }
        protected override void UpdateDisplay()
        {
            base.UpdateDisplay();
            ClsInternationalStudent lcStudent = (ClsInternationalStudent)_Student;

            txtCountry.Text = lcStudent.Country;
            txtIELTS.Text   = Convert.ToString(lcStudent.IELTSScore);
        }