Business object and linq2SQL

Posted by Overdose on Stack Overflow See other posts from Stack Overflow or by Overdose
Published on 2010-05-11T12:53:33Z Indexed on 2010/05/11 13:14 UTC
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.NET

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design

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linq-to-sql

What is the optimal way to write the code which interacts with DB using linq2SQL? I need to add some business logic to the entities. So I guess there are two ways:

Write some wrapper class. The main minus is that many fields are the same, so i don't feel it as DRY style.
Add business logic methods to linq2sql entities(these classes are partial) directly
???

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