c# - 与 FK 的一对一关系不同于 PK

Question

我在数据库中有 2 个表:ReceivedGoods 和 ReceivedGoodsProperties ReceivedGoods 包含作为 PK 的 ReceivingId 并且必须在 ReceivedGoodsProperties 中包含其扩展数据，其中包含 ReceivingId 作为引用 ReceivedGoods 的 ReceivingId。但是，当前的 ReceivedGoodsProperties 具有自己的 PK Id，因此与 FK 不同。所以我有以下内容:

public class ReceivedGoods
{
    ...
    public int ReceivingId { get; set; }
    ...
    public virtual ReceivedGoodsProperties properties { get; set; }
}

public class ReceivedGoodsProperties
{
    ...
    public int Id { get; set; } // This is PK
    public int ReceivingId { get; set; } // This is FK
    ...
    public virtual ReceivedGoods goods { get; set; }
}

我想获取 ReceivedGoods 对象并自动加载属性，但我不知道如何在 EF 中设置它。 我试过这样的事情(来自 ReceivedGoodsProperties 侧映射):

this.HasRequired(p => p.goods)
    .WithRequiredDependent(d => d.properties)
    .Map(m => m.MapKey("ReceivingId"));

但我最终遇到了以下错误:

ReceivingId: Name: Each property name in a type must be unique. Property 
name 'ReceivingId' is already defined.

当注释掉ReceivedGoodsProperties中的ReceivingId时，没有抛出上层异常，ReceivedGoods除了properties外都正确加载了> 属性(property)。

谁能给我解释一下，在这种情况下如何进行一对一映射？

Answer 1

你能不能试试:

public class ReceivedGoods
{
    ...
    public int ReceivingId { get; set; }
    ...
    public virtual ReceivedGoodsProperties properties { get; set; }
}

public class ReceivedGoodsProperties
{
    ...
    public int Id { get; set; } // This is PK
    [ForeignKey( "goods " )]
    public int ReceivingId { get; set; } // This is FK
    ...
    [Required]
    public virtual ReceivedGoods goods { get; set; }
}

顺便说一句，在 C# 中，标准指南适用于 PascalCase 成员，因此 Goods 和 Properties