实体框架核心-如何通过编程关闭自动增量？

Question

If you add DataAnnotations "Key" a new key will be created when you execute "SaveChanges". But if you wanted to bootstrap records into your database, how do you turn off the auto-generate a key feature?

public class Item 
{
    [Key]
    [Required]
    public Guid Id { get; set; }
    public string Name { get; set; }
}

Answer 1

Use [Key, DatabaseGenerated(DatabaseGeneratedOption.None)] annotation on Id field

public class Item 
{
    [Key, DatabaseGenerated(DatabaseGeneratedOption.None)]
    [Required]
    public Guid Id { get; set; }
    public string Name { get; set; }
}