public ActionResult JSonEvento()
        {
            string json = "";
            Service1Client client = new Service1Client();
            var query = client.get_eventos();

            if (query == null)
            {
                json += "{" + String.Format("\"descripcion\":\"{0}\",\"fecha\":\"{1}\"", "0", "Null") + "}";
                json = "{\"draw\": 1,\"recordsTotal\": 1,\"recordsFiltered\": 1,\"data\": [" + json + "]}";
                return Content(json);
            }
            for (int i = 0; i < query.Count(); i++)
            {
                var f = client.get_fecha_eventos(query.ElementAt(i));
                List<string> fechas = new List<string>();
                foreach (var item in f) {
                    fechas.Add(item);
                }
                string cadenaf = concatenar_fechas(fechas);
                if (!json.Equals("")) { json += ","; }
                json += "{" + String.Format("\"descripcion\":\"{0}\",\"fecha\":\"{1}\"", query.ElementAt(i), cadenaf) + "}";
            }

            json = "{\"draw\": 1,\"recordsTotal\": 1,\"recordsFiltered\": 1,\"data\": [" + json + "]}";
            return Content(json);
        }