private void ajouterToolStripMenuItem_Click(object sender, EventArgs e) { if (f5 == null) { f5 = new AddAdh(); f5.MdiParent = this; f5.FormClosed += F5_FormClosed; f5.Show(); Form childForm = new Form(); } else { f5 = new AddAdh(); } f5.MdiParent = this; f5.FormClosed += F5_FormClosed;; f5.Show(); }
private void F5_FormClosed(object sender, FormClosedEventArgs e) { f5 = null; }