事件调用的一些小问题

[xiaotuzi]

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

delegate void WorkStarted();
delegate void WorkProgressing();
delegate int WorkCompleted();

class Worker
{
    public void DoWork()
    {
        Console.WriteLine("工作: 工作开始");
        if (started != null) started();

        Console.WriteLine("工作: 工作进行中");
        if (progressing != null) progressing();


  
        Console.WriteLine("“工作: 工作完成”");
        if (completed != null)
        {
            foreach (WorkCompleted wc in completed.GetInvocationList())//GetInvocationList是啥啊？
            {
                wc.BeginInvoke(new AsyncCallback(WorkGraded), wc);//这句话啥意思？asynccallbakc是啥东西？
            }
        }

    }

    private void WorkGraded(IAsyncResult res) {
           WorkCompleted wc = (WorkCompleted)res.AsyncState;//这句话啥意思？res.AsyncState是啥意思？
           int grade = wc.EndInvoke(res);//这句话啥意思？
           Console.WriteLine("工人的工作得分＝" + grade);
       }




    public event WorkStarted started;
    public event WorkProgressing progressing;
    public event WorkCompleted completed;


}

class Boss
{
 
    public int WorkCompleted()
    {
        System.Threading.Thread.Sleep(3000);
        Console.WriteLine("Better..."); return 6; /* 总分为10 */
    }


}

class Universe
{
    static void WorkerStartedWork()
    {
        Console.WriteLine("Universe notices worker starting work");
    }

   
    static int WorkerCompletedWork()
    {
        System.Threading.Thread.Sleep(4000);
        Console.WriteLine("Universe is pleased with worker's work");
        return 7;
    }



    static void Main()
    {
        

        Worker peter = new Worker();
        Boss boss = new Boss();
        peter.completed += new WorkCompleted(boss.WorkCompleted);
        peter.started += new WorkStarted(Universe.WorkerStartedWork);
        peter.completed += new WorkCompleted(Universe.WorkerCompletedWork);

        peter.DoWork();

        Console.WriteLine("Main: 工人工作完成");
        Console.ReadLine();



    }
}

[Quinto]

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

delegate void WorkStarted();
delegate void WorkProgressing();
delegate int WorkCompleted();

class Worker
{
	public void DoWork()
	{
		Console.WriteLine("工作: 工作开始");
		if (started != null) started();

		Console.WriteLine("工作: 工作进行中");
		if (progressing != null) progressing();

		Console.WriteLine("“工作: 工作完成”");
		if (completed != null)
		{
			foreach (WorkCompleted wc in completed.GetInvocationList())
				//Delegate.GetInvocationList 方法 
				//public virtual Delegate[] GetInvocationList()
				//返回值：委托构成的数组，表示当前委托的调用列表。
			{
				wc.BeginInvoke(new AsyncCallback(WorkGraded), wc);
				//异步调用wc这个代理，WorkGrade是回调函数，wc是传给回调函数的对象（类似与参数）
			}
		}

	}

	private void WorkGraded(IAsyncResult res)
	{
		WorkCompleted wc = (WorkCompleted)res.AsyncState;//回调函数接受调用函数传给他的对象，就是刚才的wc
		int grade = wc.EndInvoke(res);//故名思议：结束调用
		Console.WriteLine("工人的工作得分＝" + grade);
	}

	public event WorkStarted started;
	public event WorkProgressing progressing;
	public event WorkCompleted completed;
}

class Boss
{
	public int WorkCompleted()
	{
		System.Threading.Thread.Sleep(3000);
		Console.WriteLine("Better..."); return 6; /* 总分为10 */
	}
}

class Universe
{
	static void WorkerStartedWork()
	{
		Console.WriteLine("Universe notices worker starting work");
	}


	static int WorkerCompletedWork()
	{
		System.Threading.Thread.Sleep(4000);
		Console.WriteLine("Universe is pleased with worker's work");
		return 7;
	}

	static void Main()
	{
		Worker peter = new Worker();
		Boss boss = new Boss();
		peter.completed += new WorkCompleted(boss.WorkCompleted);
		peter.started += new WorkStarted(Universe.WorkerStartedWork);
		peter.completed += new WorkCompleted(Universe.WorkerCompletedWork);

		peter.DoWork();

		Console.WriteLine("Main: 工人工作完成");
		Console.ReadLine();
	}
}

[Quinto]

建议看一下有关 代理 和 异步编程 相关知识~

[king19840811]

MSDN

[HowkWolf]

异步调用，上面的仁兄解释的不错，路过！

[xiaotuzi]

谢谢上面的大大，偶不懂的地方的很多，请问哪里有讲代理和异步编程的相关知识讲的好的资料么？谢谢。

[xiaotuzi]

谢谢,结贴给分