ConcurrencyCheck无法正常工作EFCore1.0

Question

  

EF生成的查询，如下，

     

P1和P4，EF正在选择相同的最新值而不是之前存储的值来与之比较。

UPDATE [XYZ] SET [c] = @p0, [time] = @p1
WHERE [a] = @p2 AND [b] = @p3 AND [time] = @p4;
SELECT @@ROWCOUNT;

',N'@p2 varchar(10),@p3 int,@p0 varchar(8000),@p1 datetime,@p4 datetime',
@p2='1234',
@p3=55,
@p0='Test Update',
@p1='2017-11-29 18:25:18.010',
@p4='2017-11-29 18:25:18.010'


----------------------------

public partial class xyz
{
    public string a{ get; set; }
    public int b{ get; set; }
    public string c{ get; set; }
    [ConcurrencyCheck]
    public DateTime time{ get; set; }
}