Problems with EqulatyComparer

=?Utf-8?B?SmFrb2IgTGl0aG5lcg==?= <jaklithn@noemail.noemail>
Mon, 14 Sep 2009 14:58:01 -0700
I have a custom generic comparer like this:

internal class SyncItemComparer : IEqualityComparer<ISyncItem>
    public bool Equals(ISyncItem x, ISyncItem y)
        return x.GlobalID.Equals(y.GlobalID);

    public int GetHashCode(ISyncItem obj)
        return obj.GlobalID.GetHashCode();

Then i try to use it in this method:

void Sync<ISyncItem>(IEnumerable<ISyncItem> masterItems,
IEnumerable<ISyncItem> clientItems)
    var comparer = new SyncItemComparer();

    foreach (var master in masterItems)
        if(clientItems.Contains<ISyncItem>(master, comparer))

The compiler warns on the Contains method:
Argument type 'MyApp.Business.Comparers.SyncItemComparer' is not assignable
to 'System.Collections.Generic.IEqualityComparer<ISyncItem>`

But the SyncItemComparer implements

It is very late and I must be blind to something ......

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