Entity Framework Code First AddOrUpdate method insert Duplicate values

Question

I have simple entity:

public class Hall
{
    [Key]
    public int Id {get; set;}

    public string Name [get; set;}
}

Then in the S

Answer 1

I have found that AddOrUpdate works fine with fields that are not ID's. If this works for you: context.Halls.AddOrUpdate(h => h.Name, hall1, hall2, hall3)

You may want to use Hall names like 'French_test_abc_100', 'German_test_abc_100' etc.

That stops hard coded test data messing things up when you are testing your app.