Multi Value Dictionary?

Question

Anyone know of a good implementation of a MultiValueDictionary? Basically, I want something that allows multiple values per key. I want to be able to do somethi

Answer 1

This ought to do for now...

public class MultiValueDictionary : IEnumerable>
{
    private Dictionary> _dict = new Dictionary>();

    public void Add(TKey key, TValue value)
    {
        if(!_dict.ContainsKey(key)) _dict[key] = new LinkedList();
        _dict[key].AddLast(value);
    }

    public IEnumerator> GetEnumerator()
    {
        foreach (var list in _dict)
            foreach (var value in list.Value)
                yield return new KeyValuePair(list.Key, value);
    }

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