转换枚举<Integer> for循环从Java到C＃？枚举<Integer>在C＃中究竟是什么？

Question

我正在将一个项目从Java转换为C＃。我试图搜索这个，但我遇到的只是有关枚举的问题。有一个Hashtable htPlaylist，循环使用Enumeration通过键。如何将此代码转换为C＃，但使用字典而不是哈希表？

// My C# Dictionary, formerly a Java Hashtable. 
Dictionary<int, SongInfo> htPlaylist = MySongs.getSongs(); 

// Original Java code trying to convert to C# using a Dictionary. 
for(Enumeration<Integer> e = htPlaylist.keys(); e.hasMoreElements(); 
{ 
    // What would nextElement() be in a Dictonary? 
    SongInfo popularSongs = htPlaylist.get(e.nextElement()); 
} 

Answer 1

呃，只是一个foreach循环？对于给定的

Dictionary<int, SongInfo> htPlaylist = MySongs.getSongs(); 

要么

foreach (var pair in htPlaylist) { 
    // int key = pair.Key; 
    // SongInfo info = pair.Value; 
    ... 
    } 

，或者如果你只想键：

foreach (int key in htPlaylist.Keys) { 
    ... 
    }