EntitySet – is there a sane reason that IList.Add doesn’t set assigned?

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Interestingly, this has been identified for several versions now (you stated that a 3.5 issue was fixed in 4.0). Here is a post from 2007. The rest of the IList methods in 4.0 are correctly tied to the IList<T> methods. I think that there are 2 likely explanations (of the bug/feature variety):

  1. This is an actual bug that Microsoft has not yet fixed.
  2. This is a feature that some other Microsoft code is exploiting leveraging to add items without setting the HasLoadedOrAssignedValues.

It is probably both – a bug that other code inside the framework is counting on. Sounds like someone said to themselves:

No one is really going to cast this into an IList and then call the Add method, right?

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