private void операцииПоСкладуГПToolStripMenuItem_Click(object sender, EventArgs e) { if (f16 == null) { f16 = new Form16(); f16.MdiParent = this; f16.FormClosed += new FormClosedEventHandler(f16_FormClosed); f16.Show(); } else { f16.Activate(); } }
void f16_FormClosed(object sender, FormClosedEventArgs e) { f16 = null; }