프로퍼티(get,set)

C# 2.0

        private float start;

        public float Start
        {
            get
            {
                return start;
            }

            set
            {
                if (value >= 0)
                    start = value;
            }
        }

C# 3.0

        public float start { get; set; } //get set 모두 허용
        //public float start { get; private set; } //set 무시
        //public float start { private get; set; } //get 무시