public void ProcessRequest(HttpContext context)
        {
            int id = Convert.ToInt32(context.Request["id"].ToString());
            context.Response.ContentType = "application/json";

            CargosBL cargosBL = new CargosBL();
            Cargos c = cargosBL.buscarCargo(id);

            context.Response.Write(string.Format("{{ \"cargosID\" : \"{0}\", \"Descripcion\" : \"{1}\"}}", c.cargosID, c.Descripcion));
            //context.Response.Write(JsonConvert.SerializeObject(c));
            context.Response.End();
        }