Entity Framework Code First DataAnnotations [ConcurrencyCheck] Attribute
Example
This attribute is applied to the class property. You can use ConcurrencyCheck attribute when you want to use existing columns for concurrency check and not a separate timestamp column for concurrency.
using System.ComponentModel.DataAnnotations;
public class Author
{
public int AuthorId { get; set; }
[ConcurrencyCheck]
public string AuthorName { get; set; }
}
From above example, ConcurrencyCheck attribute is applied to AuthorName property of the Author class. So, Code-First will include AuthorName column in update command (where clause) to check for optimistic concurrency.
