C#_abstract的用法

 /// <summary>
    /// 抽像类
    /// </summary>
    public abstract class Hello
    {
        private string msg = string.Empty;
        public string Msg
        {
            get { return msg; }
            set { msg = value; }
        }

        public abstract void say();

    }
    public class Say : Hello
    {
        public override void say()
        {
            Console.WriteLine(Msg);
        }
    }

 static void Main(string[] args)
        {
            Say s = new Say()
            {
                Msg = "啦啦啦"
            };
            s.say();
        }

 

 不可实例化

必须是抽像方法

可以包含抽像方法跟抽像访问器

不可用sealed修饰符修改抽像类

抽像类不可实现抽像方法

转载于:https://www.cnblogs.com/ingstyle/p/4378137.html