private void mantenimientoClasesDeVehiculoToolStripMenuItem_Click(object sender, EventArgs e)
{
if (clasesVehiculos == null)
{
clasesVehiculos = new ClasesVehiculos();
clasesVehiculos.MdiParent = this;
clasesVehiculos.FormClosed += new FormClosedEventHandler(cerrarClasesVehiculos);
clasesVehiculos.Show();
}
else
{
clasesVehiculos.Activate();
}
}
private void cerrarClasesVehiculos(object sender, FormClosedEventArgs e)
{
clasesVehiculos = null;
}