C#中属性与字段的用法

//People.cs
 public class People
    {
        //字段
        private string _name;
        //属性 作用：保护字段，对字段的取值和赋值进行限定，限制非法字段的摄入

        public string Name
        {
            //当你输出属性的值的时候执行get方法
            get { return _name; }
            //当给属性赋值的时候，首先会执行set方法
            set { _name = value; }
        }

        private int _age;
        public int Age
        {
            get { return _age; }
            set
            {
                if (value < 0 || value > 100)
                {
                    value = 0;
                }
                _age = value;
            }
        }
        private char _gender;
        public char Gender
        {
            get
            {
                if (_gender != ‘男‘ && _gender != ‘女‘)
                {
                    return _gender = ‘男‘;
                }

                return _gender;

            }
            set { _gender = value; }

        }

        //方法
        public void CHLSS()
        {
            Console.WriteLine("我叫{0},我今年{1}岁了，我是{2}生,我很厉害。", this._name, this._age, this.Gender);
        }
        //public static void CHLSS1()
        //{

        //}

//program.cs

 class Program
    {
        static void Main(string[] args)
        {

            //创建类的对象
            People renXiao = new People();
            renXiao.Name = "任晓";
            renXiao.Age = -23;
            renXiao.Gender = ‘欻‘;
            renXiao.CHLSS();
            Console.ReadKey();
        }
    }