如何在 EF 6.4.4 中添加单向一对多关系?

How to Add an Unidirectional One to Many Relationships in EF 6.4.4?

我有 2 个 classes:

public class Client
{
    public int Id { get; set; }
}
public class ClientRequest
{
    public int Id { get; set; }
    public int ClientId { get; set; }
    public virtual Client Client { get; set; }
}

我无法以任何方式修改 Client class(它是外部的);我想在这两个模型之间配置单向一对多关系。所以 Client 1 ← * ClientRequest 而我只能从 ClientRequest 导航到 Client。我该怎么做?

在 EFCore 中我会这样做:

entity.HasOne(e => e.Client)
      .WithMany()
      .HasForeignKey(e => e.ClientId)
      .OnDelete(DeleteBehavior.ClientSetNull);

但我在 EF 6.4.4 中没有这些方法。

会不会像这样简单:

modelBuilder?.Entity<ClientRequest>()
                     .HasRequired(e => e.Client);

在 EF 6.4.4 中配置如下关系:

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.Entity<ClientRequest>()
            .HasRequired(x => x.Client)
            .WithMany()
            .HasForeignKey(x => x.ClientId)
            .WillCascadeOnDelete(false);

            
        base.OnModelCreating(modelBuilder);
    }