protected override void OnModelCreating(DbModelBuilder modelBuilder)

{

modelBuilder.Entity<PostBody>().Property(p => p.ID)

.HasDatabaseGeneratedOption(DatabaseGeneratedOption.None);

}

也可以通过在实体类属性上加标记实现：

public class BlogPost

{

[DatabaseGenerated(DatabaseGeneratedOption.None)]

public int ID { get; set; }

}