"Reuse existing types" is ignored when adding a service reference

Question

I am adding a service reference to one of my projects in Visual Studio 2008. On the "Service Reference Settings" screen I am selecting the default option which says "Reuse types in all referenced assemblies". I have referenced the project for which I want to reuse a type. That type is being passed in as a parameter to a web method.

However, when the References.cs file is generated, it still creates a duplicate proxy version of that type. Is there something I am missing? Do you need to do anything special to the referenced type? Perhaps add some special attributes?

Answer 1

I've answered my own question (I think). What I was trying to do was use a service reference to point to an existing ASP.NET web service, but reusing types is not supported for old school web services. It only works with WCF services. So I took the plunge and converted my web service to a true WCF service and now it works fine.

Answer 2

I had a similar problem until I defined the following attribute in the code so that the namespace of the objects related to the service contract were set to the same namespace as the commonly referenced types.

[assembly: ContractNamespace("YOUR_NAMESPACE_HERE")]

Answer 3

You say "I defined the following attribute in the code"..

Where precisiely in the code did you add this Contract namespace attribute?