What is the implementing class for IGrouping?

Question

I am trying create a WCF Data Services ServiceOperation that does grouping on the server side and then sends the data down to the client.

When I try to call it (or e

Answer 1

Here is probably the most basic and generic implementation of IGrouping. Its constructor takes a key and a set of values.

public class Grouping : IGrouping
{
    private readonly TKey key;
    private readonly IEnumerable values;

    public Grouping(TKey key, IEnumerable values)
    {
        if (values == null)
            throw new ArgumentNullException("values");
        this.key = key;
        this.values = values;
    }

    public TKey Key
    {
        get { return key; }
    }

    public IEnumerator GetEnumerator()
    {
        return values.GetEnumerator();
    }

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