private void ClasesDeVehiculoToolStripMenuItem_Click(object sender, EventArgs e) { if (clacesDeVehiculos == null) { clacesDeVehiculos = new MantenimientoClasesDeVehiculos(); clacesDeVehiculos.MdiParent = this; clacesDeVehiculos.FormClosed += new FormClosedEventHandler(cerrarClasesDevehiculos); clacesDeVehiculos.Show(); } else { clacesDeVehiculos.Activate(); } }
private void cerrarClasesDevehiculos(object sender, FormClosedEventArgs e) { clacesDeVehiculos = null; }