非标准的非唯一外键

Question

由于我的数据库设置（我没有控制权）的方式，我有一个外键的情况，我无法弄清楚在实体框架。我正在使用Fluent API来配置我的关系。我的班是

public class Parent 
{ 
    // Unique primary key 
    public int PrimaryKey { get; set; } 

    // These two fields together compose the foreign key to join to Child 
    public string ParentForeignKey1 { get; set; } 
    public string ParentForeignKey2 { get; set; } 

    public List<Child> Children { get; set; } 
} 

public class Child 
{ 
    // Unique primary key 
    public int PrimaryKey { get; set; } 

    // These two fields together compose the (non-unique) foreign key to join to Parent 
    public string ChildForeignKey1 { get; set; } 
    public string ChildForeignKey2 { get; set; } 

    // The parent/child relationship is implicit, even though the tables 
    // themselves indicate a many-to-many relationship 
    public List<Parent> Parents { get; set; } 
} 

实体框架的关系应该是这样的，两个表上ParentForeignKey和ChildForeignKey领域加入像

SELECT * 
FROM Parent 
JOIN Child 
ON Child.ChildForeignKey1 = Parent.ParentForeignKey1 
AND Child.ChildForeignKey2 = Parent.ParentForeignKey2 

如何建立良好的API外键映射，使实体当我查询DbSet时，框架会生成这些连接？

Answer 1

我想这更有意义

public class Parent 
{ 
    // The parent/child relationship is implicit, even though the tables 
    // themselves indicate a many-to-many relationship 
    public static List<Parent> Parents { get; set; } 


    // Unique primary key 
    public int PrimaryKey { get; set; } 

    // These two fields together compose the foreign key to join to Child 
    public string ParentForeignKey1 { get; set; } 
    public string ParentForeignKey2 { get; set; } 

    public List<Child> Children { get; set; } 
} 

public class Child 
{ 
    // Unique primary key 
    public int PrimaryKey { get; set; } 

    // These two fields together compose the (non-unique) foreign key to join to Parent 
    public string ChildForeignKey1 { get; set; } 
    public string ChildForeignKey2 { get; set; } 

}