An object with the same key already exists in the ObjectStateManager. The ObjectStateManager cannot track multiple objects with the same key.

Apr 26, 2015 at 8:13 PM
How to solve it? I make Update but the second time I got this error message.
May 12, 2015 at 5:41 PM
Please post your implementation.
Marked as answer by lelong37 on 5/12/2015 at 10:48 AM