小编use*_*877的帖子

我即将使用状态模式在C#中实现分层状态机.作为指导,我正在使用这个例子.但是,该示例并未提供有关分层状态的答案.不幸的是,我似乎无法在其他地方找到好的例子.我的第一个想法是为分层状态创建嵌套类.但这被认为是最佳实践还是有更好的解决方案？

映入眼帘!

更新:

我整个下午一直坐着试图实现如上所述的状态模式.HSM基于一个非常简单的媒体播放器:

alt text http://www.freeimagehosting.net/uploads/e8d2d6486a.jpg

我以为我已经做到了,但有一点我不明白.首先是我写的代码(抱歉,它非常多):

public class MediaPlayer
{
    public MediaPlayerStates state;

    public MediaPlayer(MediaPlayerStates state)
    {
        this.state = state;
    }

    public void OnButtonPressed()
    {
        state.OnButtonPressed(this);
    }

    public void DeviceBooted()
    { 
        state. ?????
    }

    //Other Functions
}

//The 3 initial states (Start, On, End) know only 2 events.
public abstract class MediaPlayerStates
{
    public abstract void OnButtonPressed(MediaPlayer player);
    public abstract void OffButtonPressed(MediaPlayer player);
}

//The very beginpoint of the state machine
public class Start : MediaPlayerStates …

我正在尝试生成一个随机长度的字符串,该字符串由随机chars组成.

为此,我有这样的代码:

class Program
{
    static void Main(string[] args)
    {
        for (int i = 0; i < 1000; i++)
        {
            MyString test = new MyString();

            test.Random();
            Console.WriteLine(test.Value);
        }
        Console.ReadLine();
    }
}

public class MyString
{
    private string value = string.Empty;
    private Random r = new Random();

    public string Value
    {
        get { return this.value; }
        set { this.value = value; }
    }

    public void Random()
    {
        int length = (r.Next() % (100)) + 1;
        for(int i = 0; …