C sharp事件不起作用 [英] C sharp Event is not working

问题描述

我正在尝试在我的Person类中创建一个事件，当 Cash 属性为> = 100时通知其他类。我的代码运行正常，但不是'做任何事情。

I'm trying to make an event in my Person Class that notifies other classes when the Cash property is >= 100. My code runs fine, but doesn't do anything.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{

    class Program
    {
        static void Main(string[] args)
        {
            Person NewPerson = new Person();
            NewPerson.AddCash(150);
           NewPerson.Myevent += NewPerson_Myevent;

       }

        static void NewPerson_Myevent()
        {
            Console.WriteLine("Hello New Person");
        }

    }
    public class Person
    {
        public delegate void MyeventHandler();
        public event MyeventHandler Myevent;

        private int _cash = 50;
        public int Cash
        {
            get
            {
                return this._cash;
            }
            set
            {
                this._cash = value;
                if (this._cash >= 100)
                {
                    if (Myevent != null)
                    {
                        Myevent();
                    }
                }

            }

        }
        public void AddCash(int money)
        {
           Cash += money;
        }
    }
}

推荐答案

您在添加活动之前添加了这笔钱。颠倒代码的顺序

You're adding the money before you attach the event. Reverse the order of the code

Person NewPerson = new Person();
NewPerson.Myevent += NewPerson_Myevent;
NewPerson.AddCash(150);

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