‏‏لا يستطيع AcceptChanges الاستمرار لأن قيمة object�s EntityKey فارغة أو ليست مفتاحًا مؤقتًا. يمكن أن يحدث هذا عند تعديل خاصية EntityKey أثناء وجود الكائن في حالة مضافة.

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AcceptChanges cannot continue because the object�s EntityKey value is null or is not a temporary key. This can happen when the EntityKey property is modified while the object is in an added state.

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