Vista - Inconsistent results with Add Service Reference

I have a contract method that returns a generic list

[OperationContract]
IList<string> Operation3(Guid myGuid);


When I run Add Service Reference to a winforms client app, I get the
following proxy generated

public System.ComponentModel.BindingList<string>
Operation3(System.Guid myGuid)
{
return base.Channel.Operation3(myGuid);
}

which is great.


When I generate the client proxy in a class library project, the following
proxy method is generated

public string[] Operation3(System.Guid myGuid)
{
return base.Channel.Operation3(myGuid);
}

Where an array is returned.

Can someone explain why this is occurring? And how to get consistent results.


Thanks

Colin








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Colin Foulkes