问题
One of my models, let's call it "Comment" has a timestamp column/member
I had defined it originally as:
[Required]
public DateTime Timestamp { get; set; }
I had some methods in other parts of my code that would get the latest comments after a specific time, so it would grab all comments with a timestamp greater than some value.
I recently came across an article by Julie Lerman about the timestamp data annotation for entity framework (http://msdn.microsoft.com/en-US/data/jj591583#c_8b121aeb433a4ab19d538bc8c20a58fb) and she suggested using a byte array with the [Timestamp] data annotation for correct storage in the database.
[Timestamp]
public Byte[] Timestamp { get; set; }
I am not sure how to handle finding updated records with the byte array. From what I understand, the system handles timestamp byte arrays by just incrementing them by 1 every time they are updated, but that is a relative value.
What am I missing?
回答1:
Sounds like you're not using the Timestamp property as a concurrency check but as a standard property. I'd revert back to a DateTime
来源：https://stackoverflow.com/questions/18279614/finding-updated-entry-with-entity-framework-timestamp-using-code-first