private void backBut_Click(object sender, EventArgs e)
{
Form0 fr = new Form0(acedemicYear, sem, exam, branch);
this.Hide();
fr.ShowDialog();
this.Close();
}
private void button1_Click(object sender, EventArgs e)
{
string ay = aySel.Text;
string sem = semSel.Text;
string exam = exSel.Text;
string branch = braSel.Text;
Form0 fr = new Form0(ay, sem, exam, branch);
this.Hide();
fr.ShowDialog();
this.Close();
}