How to detach an ObjectGraph from the Entity Framework Context?

I need a solution on detaching an Entity and his child records from a context. If i try to detach the parent entity only from a List<> i queried with LINQ to Entities i lose the child records. If i try to enumerate through the child records and detach them i ge开发者_运维百科t an InvalidOperationException.

Is there a solution i miss?

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Take a look at the answer by Alex James here.
Maybe this article will also be helpful.