Biegral Blog

关于EF主键问题

        [Key]
        public int ID { get; set; }

问题：

当默认情况下添加数据时如果ID=0则会抛出异常：

Cannot insert the value NULL into column 'ID', table 'WXData.dbo.UserGroup'; 
column does not allow nulls. INSERT fails.
The statement has been terminated.

    [DatabaseGenerated(DatabaseGeneratedOption.None)]
    public int ID { get; set; }

更多属性这是问题：http://blog.163.com/m13864039250_1/blog/static/21386524820152831234140/