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  1. USrideronthestorm
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    1. This table or related slice is empty.
    1. COI have put the inner exception, but there is also message in the DbUpdateException: An error occurred while saving entities that do not expose foreign key properties for their relationships. The EntityEntries property will return null because a single entity cannot be identified as the source of the exception. Handling of exceptions while saving can be made easier by exposing foreign key properties in your entity types. See the InnerException for details.
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    2. COI have put breakpoint on cotext.SaveChanges(), changed something manually in database and then continued. The inner exception: "Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded. Refresh ObjectStateManager entries."
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    3. COThe statement was based on the fact that after couple of days there was no answer in the subject. Hopefully I made it worked on my own. Of course you could take into consideration the fact that there had been kind of answer, but guess what? You deleted it, because I wasn't thankful enough for it. Yeah, I am a child, but your behavior is very mature. Dear Bart Kiers I have no obligation to thank for any useless answer I am getting from you. If it was resolving my problem, I would mark it as an accepted answer. What's more you started offecncing me with no reason (just like a 'spiteful child').
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