public static object Get_Modelo(String[] strParametros)
    {
        ArrayList  oComboModelo = null;
        VehiculoBL oVehiculoBL  = new VehiculoBL();
        VehiculoBE oVehiculoBE  = new VehiculoBE();

        oVehiculoBE.nid_marca = Convert.ToInt32(strParametros[0]);

        VehiculoBEList oModelos = oVehiculoBL.ListarModelosPorMarca(oVehiculoBE);

        if (oModelos != null)
        {
            oComboModelo = new ArrayList();
            foreach (VehiculoBE oModelo in oModelos)
            {
                object objModelo = new { value = oModelo.nid_modelo.ToString(), nombre = oModelo.no_modelo };
                oComboModelo.Add(objModelo);
            }
        }

        object response = new
        {
            oComboModelo
        };

        System.Web.Script.Serialization.JavaScriptSerializer serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
        return(serializer.Serialize(response));
    }