ForeignKey on navigation property not work

[flier268]

public class Parent
{
    [Key, Column(Order = 1)]
    public int Key1 { get; set; }

    [Key, Column(Order = 2)]
    public int Key2 { get; set; }

    public string Name { get; set; } = null!;

    [InverseProperty(nameof(Child.Parent))]
    public virtual IEnumerable<Child>? Children { get; set; }
}

public class Child
{
    [Key]
    public int Id { get; set; }

    public int ParentKey1 { get; set; }
    public int ParentKey2 { get; set; }

    [ForeignKey($"{nameof(ParentKey1)}, {nameof(ParentKey2)}")]
    public virtual Parent? Parent { get; set; }
}

[MoonStorm]

That is not a valid construct. You need to have a separate set of parent-child properties for each of foreign key relationships. Check the wiki for some examples.

[flier268]

In EF Core, ForeignKey can be added to the child model or parent model, maybe we can support that.
In some case, we will use Dapper and EF Core both with same model.