private void Add_BT_Click(object sender, EventArgs e)
 {
     if (traineeIsEmt())
     {
         MessageBox.Show("Provide information at unassigned box(es)");
         TrainerID_TB.Focus();
     }
     else if (TRAINEEID.Text.Substring(0, 1) == "0")
     {
         MessageBox.Show("invalid ID input");
         TrainerID_TB.Focus();
     }
     else
     {
         TRCl trainee = new TRCl(TRAINEEID.Text.ToString(), TRAINEENAME.Text.ToString(), TRAINEEEDU.Text.ToString(), TRAINEEDOB.Value.Date, TRAINEEPROG.Text.ToString(), TRAINEETOEIC.Text.ToString(), TRAINEEEXP.Text.ToString(), TRAINEEDEPT.Text.ToString(), TRAINEECOURSEID.Text.ToString());
         if (trainee.Add() != 0)
         {
             MessageBox.Show("Success");
             ClearTB();
             this.Close();
         }
         else
         {
             MessageBox.Show("Assign the god damn Course beyotch");
         }
     }
 }
        public TR_PopupForm()
        {
            InitializeComponent();
            Trainer_GB.Hide();
            Trainee_GB.BringToFront();
            TRCl tr_Class = new TRCl();

            TRAINEECOURSEID.DataSource = tr_Class.IDretrieve();
            if (Staff.Action.ToString() == "Add")
            {
                Update_BT.Hide();
                Delete_BT.Hide();
            }
        }