public ID GetAbrirCaja(string id) { int ret = -1; int idinventario = 0; int.TryParse(id, out idinventario); if (idinventario == 0) { throw new HttpResponseException(HttpStatusCode.NotFound); } if (ClassBD.AbrirCaja(idinventario)) { ret = 0; } return(new ID(ret)); }