private void créerUneLigueToolStripMenuItem_Click(object sender, EventArgs e) { if (f2 == null) { f2 = new AddClub(); f2.MdiParent = this; f2.FormClosed += F2_FormClosed;; f2.Show(); Form childForm = new Form(); } else { f2.Activate(); } }
private void F2_FormClosed(object sender, FormClosedEventArgs e) { f2 = null; }