C＃：IEnumerable，GetEnumerator，一个简单，简单的例子！ [英] C#: IEnumerable, GetEnumerator, a simple, simple example please!

问题描述

尝试创建一个实现枚举器的uebersimple类，但由于缺少简单/无功能的示例而疯狂失败。所有我想做的是在数据结构周围创建一个包装（在这种情况下是一个列表，但是我可能需要一个字典），并添加一些功能。

Trying to create an uebersimple class that implements get enumerator, but failing madly due to lack of simple / non-functioning examples out there. All I want to do is create a wrapper around a data structure (in this case a list, but I might need a dictionary later) and add some functions.

public class Album
{
    public readonly string Artist;
    public readonly string Title;
    public Album(string artist, string title)
    {
         Artist = artist;
         Title = title;
    } 
}
public class AlbumList
{
    private List<Album> Albums = new List<Album>;
    public Count { get { return Albums.Count; } }

    .....
    //Somehow GetEnumerator here to return Album
}

谢谢！

推荐答案

您可以简单地返回List< T> .GetEnumerator：

You can simply return the enumerator returned by List<T>.GetEnumerator:

public class AlbumList : IEnumerable<Album>
{
    // ...

    public IEnumerator<Album> GetEnumerator()
    {
        return this.albums.GetEnumerator();
    }

    IEnumerator IEnumerable.GetEnumerator()
    {
        return GetEnumerator();
    }
}

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