private void vehiculosToolStripMenuItem_Click(object sender, EventArgs e) { var formVehiculos = new formVehiculos(); formVehiculos.MdiParent = this; formVehiculos.Show(); }
private void vehículosToolStripMenuItem1_Click(object sender, EventArgs e) { if (formVehiculos == null) { formVehiculos = new formVehiculos(); formVehiculos.MdiParent = this; formVehiculos.Show(); } else if (formVehiculos.IsDisposed) { formVehiculos = new formVehiculos(); formVehiculos.MdiParent = this; formVehiculos.Show(); } else { formVehiculos.Activate(); } }