摘要：
http://huyrua.wordpress.com/2010/07/13/entity-framework-4-poco-repository-and-specification-pattern/(good article)http://stackoverflow.com/questions/4295975/repository-pattern-in-entity-framework-4-when-should-we-disposehttp://elegantcode.com/2009/12/15/entity-framework-ef4-generic-repository-and-un 阅读全文
