.NET日常之this,base

this表示当前类的实例，base用于从派生类中访问基类的成员，创建子类的实例时调用基类的构造函数

class Father
    {
        public string LastName { get; set; }
        public string Property { get; set; }
        public string Wealth { get; set; }
        public Father()
        { }
        public Father(string lastName,string property,string wealth)
        {
            this.LastName = lastName;
            this.Property = property;
            this.Wealth = wealth;
        }
        public virtual void A()
        {
            MessageBox.Show("这是父类方法");
        }
    }
    class Son : Father
    {
        public override void A()
        {
            base.A();
            MessageBox.Show("这是子类放法");
        }
        public Son()
        { }
        public Son(string lastName, string property, string wealth) : base(lastName,property,wealth)
        {
            
        }
       
    }

virtual：子类需要重写父类的方法时，父类方法必须有abstract，virtual，override