private void uslugeToolStripMenuItem_Click(object sender, EventArgs e) { if (usluge == null) { usluge = new Usluge(); usluge.FormClosed += grad_FormClosed; usluge.MdiParent = this; usluge.Show(); usluge.WindowState = FormWindowState.Maximized; } else { usluge.Show(); usluge.WindowState = FormWindowState.Maximized; } }
void grad_FormClosed(object sender, FormClosedEventArgs e) { usluge = null; //throw new NotImplementedException(); }