C#练习委托、事件、事件处理

控制台应用程序效果：

代码：

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

namespace MyEventTest
{
    class Program
    {
        /// <summary>
        /// 第一步 新建委托需要的带参数的类,属于事件的参数的子类
        /// </summary>
        public class MyClassEventArgs : EventArgs
        {
            private string name;

            public string Name
            {
                get { return name; }
                set { name = value; }
            }
            private int age;

            public int Age
            {
                get { return age; }
                set { age = value; }
            }


        }

        /// <summary>
        /// //第二步 新建一个带参数的委托
        /// </summary>
        /// <param name="sender">触发源</param>
        /// <param name="mc">参数</param>
        public delegate void MyDelegate(object sender,MyClassEventArgs mc);

        /// <summary>
        /// 第三步 新建一个会触发事件的类
        /// </summary>
        public class Custom
        {
            /// <summary>
            /// 第四步 新建一个委托发生时触发的事件
            /// </summary>
            public event MyDelegate Shout;

            private string name;

            public string Name
            {
                get { return name; }
                set { name = value; }
            }
            private int age;

            public int Age
            {
                get { return age; }
                set { age = value; }
            }

            public Custom()
            {

            }

            public Custom(string n, int a)
            {
                name = n;
                age = a;
            }

            public void Buy()
            {
                Console.WriteLine("{0}:我要来买东西！",this.name);

                //第五步 在方法中关联事件
                MyClassEventArgs mcea = new MyClassEventArgs();
                mcea.Name = name;
                mcea.Age = age;
                if (Shout != null)
                {
                    Shout(this,mcea);
                }
            }
        }

        /// <summary>
        /// 第六步 新建一个事件发生后要执行的类
        /// </summary>
        public class Reporter
        {
            public void Notify(object sender, MyClassEventArgs mcea)
            {
                Console.WriteLine("老板：小白快去接客了，客户名字叫{0}，年龄{1}岁",mcea.Name,mcea.Age);
            }
        }


        /// <summary>
        /// 第七步 做一种触发事件的情况，并把事件和事件的处理关联起来
        /// </summary>
        /// <param name="args"></param>
        static void Main(string[] args)
        {
            Custom c1 = new Custom("大美女",18);
            Reporter r1 = new Reporter();

            c1.Shout +=new MyDelegate(r1.Notify);

            c1.Buy();
        }
    }
}