Entity Framework Code First - No Detach() method on DbContext

entity-framework code-first
Brian Sullivan picture Brian Sullivan · Nov 12, 2010 · Viewed 29.9k times · Source

I'm wondering why there is no Detach method on the DbContext object like there is for ObjectContext.  I can only assume this omission was intentional, but I have a hard time figuring out why.  I need to be able to detach and re-attach entities (for putting in the cache in an ASP.NET project, for example).  However, since I can't detach an entity, when I try to attach an entity that was associated with a previous context, I get the "An entity object cannot be referenced by multiple instances of IEntityChangeTracker" exception.

What's the guidance here?  Am I missing something?

Answer

Joakim picture Joakim · Dec 8, 2010

For people that might stumble upon this question, as of CTP5 you now need to write

((IObjectContextAdapter)context).ObjectContext

in order to get to ObjectContext.

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