Loading Entity Framework 4.0 POCO classes can still cause circular references

I’ve been designing my MVC apps using custom ObjectContext’s and POCO style classes.

So, to my surprise, when serializing a lazy loaded POCO class to a JsonResult, I stumbled onto this.

“A circular reference was detected while serializing an object of type…”

One potential way to get around this, set the following in your custom ObjectContext

this.ContextOptions.ProxyCreationEnabled = false;

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