private void asignTecherToAClassToolStripMenuItem_Click(object sender, EventArgs e)
{
Assignteachertoclass atc = new Assignteachertoclass();
atc.MdiParent = this;
atc.Show();
}
private void deleteTeacherFromTheClassToolStripMenuItem_Click(object sender, EventArgs e)
{
Assignteachertoclass atc = new Assignteachertoclass();
atc.MdiParent = this;
atc.Show();
}
private void button3_Click(object sender, EventArgs e)
{
Assignteachertoclass at = new Assignteachertoclass();
at.Show();
}