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希望有人能告诉我如何实现这种多对可能的关系......

我有两个班级，汽车和车主。每辆车可以由多个车主拥有。每个车主可以拥有多辆汽车。请注意，我只想要从汽车到车主的导航属性。

public partial class Car
{
    public int CarId { get; set; }
    public string Name { get; set; }
    public ICollection<Owner> Owners { get; set; }
}

public partial class Owner
{
    public int OwnerId { get; set; }
    public string  Name { get; set; }
}

在我的 DbInitializer 中，我像这样播种 b 。

        Owner owner1 = new Owner() { OwnerId = 10, Name = "Erik" };
        context.Owners.Add(owner1);
        Car b1 = new Car() { CarId = 1, Name = "Volvo", Owners = new List<Owner>(new Owner[] { owner1 }) };
        Car b2 = new Car() { CarId = 2, Name = "Saab", Owners = new List<Owner>(new Owner[] { owner1 }) };
        context.Cars.Add(b1);
        context.Cars.Add(b2);
        context.SaveChanges();

结果是 owner1 只拥有 b2。为什么？以及如何将其更改为多对多关系？

谢谢！

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1 回答 1

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在您的上下文中添加以下内容：

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
    base.OnModelCreating(modelBuilder);
    modelBuilder.Entity<Car>().HasMany(c => c.Owners).WithMany();
}

我告诉CarEFOwner在Owner.

于 2013-05-06T06:56:18.913 回答