ef code first - Entity Framework auto incrementing field, that isn't the Id

Question

I know this isn't the most ideal solution, but I need to add an auto incrementing field to one of my EF Code First objects. This column id NOT the Id, which is a guid.

Is there anyway for me to define the auto incrementing field in code, or would creating the column myself and defining in the DB that its auto incrementing work?

Answer 1

You can annotate that property with DatabaseGenerated(DatabaseGeneratedOption.Identity). EF allows only single identity column per table.

public class Foo
{
    [Key]
    public Guid Id { get; set; }

    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public long Bar { get; set; }
}