public void Decrease(string getperson, string oweperson)
        {
            var x = this.Request.Method;

            if (this.Request.Method == "PUT")
            {
                try
                {
                    List <Person> personlist = new List <Person>();
                    Manager       incManager = new Manager();

                    using (DataSevice service = new DataSevice(true))
                    {
                        personlist = service.DeSerializeObject <List <Person> >();

                        if (incManager.ChangeValue(personlist, getperson, oweperson, (s) => s.Value = Math.Max(s.Value - 1, 0)))
                        {
                            service.SerializeObject <List <Person> >(personlist);
                        }
                    }
                }
                catch (Exception)
                {
                    throw new HttpResponseException(HttpStatusCode.InternalServerError);
                }
            }
        }
        public IEnumerable <Person> Add(string name)
        {
            List <Person> personlist = new List <Person>();

            if (this.Request.Method == "POST")
            {
                try
                {
                    Manager incManager = new Manager();

                    using (DataSevice service = new DataSevice(true))
                    {
                        personlist = service.DeSerializeObject <List <Person> >();

                        if (incManager.AddPerson(personlist, name))
                        {
                            service.SerializeObject <List <Person> >(personlist);
                        }
                    }
                }
                catch (Exception)
                {
                    throw new HttpResponseException(HttpStatusCode.InternalServerError);
                }
            }
            return(personlist);
        }
        public IEnumerable <Person> Get()
        {
            try{
                IEnumerable <Person> personlist;
                using (DataSevice service = new DataSevice(false))
                {
                    personlist = service.DeSerializeObject <IEnumerable <Person> >();
                }

                return(personlist);
            }
            catch (Exception)
            {
                throw new HttpResponseException(HttpStatusCode.InternalServerError);
            }
        }