Duplicate Key Alternative for Generic Dictionary

[sloan]

I know a Dictionary < TKey, TValue does not allow duplicate keys.

System.Collections.Generic.Dictionary<Guid, Guidtest = new
System.Collections.Generic.Dictionary<Guid, Guid>();
//duplicate key
test.Add(new Guid("00000000-0000-0000-0000-000000000001"), Guid.NewGuid());
test.Add(new Guid("00000000-0000-0000-0000-000000000001"), Guid.NewGuid());
Does anyone know of an alternative generic/collection that would allow the
operation above?

I'm thinking there is C5 option, but figured I'd ask since somebody would
probably know in about 2ms.

Thanks.

[Rene]

Does anyone know of an alternative generic/collection that would allow the

operation above?

Yes, you can use the "NameValueCollection".

[Marc Gravell]

Well, there's the (immutable) Lookup<TKey,TValueclass in 3.5, but I
can't find it in MSDN2 to find out what the "O" is for the indexer.

Marc

Guid dept1 = new
Guid("00000000-0000-0000-0000-000000000001");
Guid dept2 = new
Guid("00000000-0000-0000-0000-000000000002");
Guid dept3 = new
Guid("00000000-0000-0000-0000-000000000003");

var lookup = new[] {
new {Key=dept1, Value = Guid.NewGuid()},
new {Key=dept1, Value = Guid.NewGuid()},
new {Key=dept1, Value = Guid.NewGuid()},

new {Key=dept2, Value = Guid.NewGuid()},
new {Key=dept2, Value = Guid.NewGuid()},
new {Key=dept2, Value = Guid.NewGuid()},

new {Key=dept3, Value = Guid.NewGuid()},
new {Key=dept3, Value = Guid.NewGuid()},
new {Key=dept3, Value = Guid.NewGuid()}
}.ToLookup(x =x.Key);

foreach (var record in lookup[dept1])
{
Console.WriteLine("{0}: {1}", record.Key,
record.Value);
}

[Rene]

Never mind, that is a string/string collection. Aggggg!

"Rene" <[e-mail] in message
news:eF**************@TK2MSFTNGP03.phx.gbl...

>Does anyone know of an alternative generic/collection that would allow
the operation above?

Yes, you can use the "NameValueCollection".