EntityFramework：使用EntityTypeConfiguration映射具有列表的类

Question

I have this class:

public class RecentlyViewedProducts : BaseEntity
{
    public int CustomerId { get; set; }
    public List<int> ProductId { get; set; }
}

How to use EntityTypeConfiguration<TEntityType>.HasKey<TKey> method to say that the generated table will have a composite key (CustomerId, ProductId ) ?

That means I want to get the "rows per customer" as the Count of the related List ?

Answer 1

You can make a composite key by including this in your mapping:

// Primary Key
HasKey(e => new { e.CustomerId, e.ProductId});