private void Button1_Click(object sender, EventArgs e) { if (login == null) { login = new Formulario_login(); login.FormClosed += new FormClosedEventHandler(CerrarLogin); MdiParent = this.MdiParent; login.Show(); login.TopMost = true; } else { login.Activate(); } Ocultarsubmenu(); }
void CerrarLogin(object sender, EventArgs e) { login = null; }