I have a DataGridView with EntityDataSource; DataGridView has deleting and updating enabled. Everything works well, but when I hit F5 key I get following exception:
System.Data.OptimisticConcurrencyException: 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.
I've spent last hour or so trying to find a solution with Google, but I am obviously missing something as I am not sure how to transcend those information to working solution and I start to feel like a simpleton.
Can someone explain me what am I missing or doing wrong?
In simple English =/.