public IHttpActionResult PutUser(int id, Price price)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }
            if (id != price.id)
            {
                return(BadRequest());
            }
            mensaje = priceModel.UpdatePrice(id, price);
            if (mensaje == "OK")
            {
                //return StatusCode(HttpStatusCode.OK);

                /*return new System.Web.Http.Results.ResponseMessageResult(
                 *  Request.CreateResponse(
                 *      (HttpStatusCode)205,
                 *      new HttpError("updated OK")
                 *  )
                 * );*/
                return(Ok("Update Ok"));
            }
            else
            {
                return(NotFound());
            }
        }