委托和事件的区别

我想我知道委托和时间的区别了

 

委托可以被外部调用 

 namespace GrammerTest

{
    public delegate void FuncDelegate();
    public class DelegateTest
    {
        public FuncDelegate FuncDelegateObject;
        public  DelegateTest()
        {
            FuncDelegateObject = Func1;
            FuncDelegateObject += Func2;
        }

        

        public void Func1()
        {
            Console.WriteLine("Func 1");
        }

        public void Func2()
        {
            Console.WriteLine("Func 2");
        }
    }
}

 

         private static void Main()

        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            //new ForeachNullList().Run();

            new DelegateTest().FuncDelegateObject();

            Console.Read();
            //Application.Run(new Form1());
        }

 

事件不可以从类的外部发动

 using System;

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

namespace GrammerTest
{
    public delegate void ADelegate();
    public class EventPublisher
    {
        public event ADelegate AEvent;
        public void Fire()
        {
            if (AEvent != null)
                AEvent();
        } 
  
    }

    internal class EventClient
    {

        public void Func1()
        {
            Console.WriteLine("Func 1");
        }
    }


    internal class EventClient2
    {
        public void Func2()
        {
            Console.WriteLine("Func 2");
        }
    }

    class EventTest
    {
        public void Run()
        {
            EventPublisher ep = new EventPublisher();
            EventClient ec1 = new EventClient();
            EventClient2 ec2 = new EventClient2();
            ep.AEvent += ec1.Func1;
            ep.AEvent += ec2.Func2;

            //ep.AEvent(); doesn't work
            //only
            ep.Fire();
        }
    }

}