unidirectional many-to-many relationship with Code First Entity Framework

Question

I am new to EF, and trying to get many-to-many unidirectional relationship with code first approach. For example, if I have following two classes (not my real model) with b

Answer 1

Use this:

public class User {
    public int UserId { get; set; }
    public string Email { get; set; }
    // You must use generic collection
    public virtual ICollection<Customer> TaggedCustomers { get; set; }
}

public class Customer {
    public int CustomerId { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

And map it with:

modelBuilder.Entity<User>()
    .HasMany(r => r.TaggedCustomers)
    .WithMany() // No navigation property here
    .Map(m =>
        {
            m.MapLeftKey("UserId");
            m.MapRightKey("CustomerId");
            m.ToTable("BridgeTableForCustomerAndUser");
        });