Limiting WCF Data Members in Linq to SQL's DBML Serialization?

I understand that you can set the Serialization Mode = Unidirectional to allow data contracts to your dbml auto-generated entities. However, is there a way to开发者_Python百科 only expose certain entities and ALSO limit the entities exposed to only expose certain properties of that entity as well?

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I Googled and found it so I'm posting here for prosperity's sake:

Credit: http://blogs.msdn.com/b/wriju/archive/2007/11/27/linq-to-sql-enabling-dbml-file-for-wcf.aspx

Basically you just set the DBML's Serializable Mode = Unidirectional and then you set the "Access" for each entity you don't want exposed to the Service equal to Friend instead of Public. Access = Friend