自动生成主键(Guid)实体框架CTP5

Question

我有一个PCOO课程

public class Account
    {
        [Key,DatabaseGenerated(DatabaseGenerationOption.Identity)]
        public string AccountId { set; get; }

        public string FirstName { set; get; }

        public string LastName { set; get; }

        public string Email { set; get; }


    }

创建数据库时,我收到以下异常

Identity column 'AccountId' must be of data type int, bigint, smallint, tinyint, or decimal or numeric with a scale of 0, and constrained to be nonnullable.

Answer 1

你不应该:

    [Key,DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public Guid AccountId { set; get; }

？