http://silverlight.net/learn/videos/all/net-ria-services-intro/.
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I followed the video to create the ADO.NET Entity Data Model and Domain Service Class. Everything works just fine until
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The AdvDomainContext cannot be found. The reason is RIA service use Generated_Code to share code between Server and silverlight which technically exclude from project.
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So any code references Generated_Code in silverlight can not be resolved by Resharper.
Solution:
1. Show all file in VS 2008
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2. Include Generated_Code into project
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Then, Resharper can pick up the class now.
By the way, it might pop up warning when you dubug the project
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Just go will the "continue".
It works now :-)