Can anyone tell me why I can't add two of the same entity to a collection and then use foreach to iterate over the collection and get the two entities back out. It seems that when I do this I only get one entity back out. The EntityCollection seems to eat up one of the two duplicate entities. This still happens even if I change the value of a property on one of the two entities to make it different.

Are their primary keys the same?

bclubb wrote:

Are their primary keys the same?

Yes, My the primary key for the two entities is the same. I am aware of the fact that I can make this work if I use some type of collection other then an entity collection, but I would prefere to use the entity collection if at all possible.

Set the DoNotPerformAddIfPresent property of the collection to false and you should be able to add the second entity.

Thank you for the info, this has solved my problem.