Converting Enumeration for loop from Java to C#? What exactly is an Enumeration in C#?

Question

I'm converting a project from Java to C#. I've tried to search this, but all I come across is questions about enums. There is a Hashtable htPlaylist, and the loop uses Enumeration to go through the keys. How would I convert this code to C#, but using a Dictionary instead of a Hashtable?

// 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());
}

[What is the best way to iterate over a Dictionary in C#?](http://stackoverflow.com/questions/141088/what-is-the-best-way-to-iterate-over-a-dictionary-in-c) — Equalsk, Feb 03 '17 at 10:42
So I should just do foreach(KeyValuePair? What exactly is an Enumeration in Java though? What would be the equivalence of that in C#? — Michael Weston, Feb 03 '17 at 11:07
Disregard, got my answer in another thread about hashtables on stackoverflow. It is a duplicate, please allow me to delete. — Michael Weston, Feb 03 '17 at 11:19

Dmitry Bychenko · Accepted Answer · 2017-02-03T12:24:16.193

6

Eh, just a foreach loop? For the given

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

either

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

or if you want just keys:

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

edited Feb 03 '17 at 12:24

answered Feb 03 '17 at 10:44

Dmitry Bychenko

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Converting Enumeration for loop from Java to C#? What exactly is an Enumeration in C#?

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