entity framework代码优先 – 将两个字段联合成一个集合

我有这个型号和配置

public class Person { public int? FatherId { get; set; } public virtual Person Father { get; set; } public int? MotherId { get; set; } public virtual Person Mother { get; set; } public virtual List Childs { get; set; } } class PersonConfiguration : EntityTypeConfiguration { public PersonConfiguration() { HasOptional(e => e.Father).WithMany(e => e.Childs) .HasForeignKey(e => e.FatherId); HasOptional(e => e.Mother).WithMany(e => e.Childs) .HasForeignKey(e => e.MotherId); } } 

我得到这个类型是初始的错误。

指定的架构无效。 错误：（151,6）：错误0040：类型Person_Father未在命名空间ExamModel（Alias = Self）中定义。

有没有办法通过两个属性（motherId和fatherId）映射Childs属性？

Answer 1

无法将两个导航属性映射到单个集合属性。 它看起来很嘲笑，但你必须有两个集合属性

 public class Person { public int? FatherId { get; set; } public virtual Person Father { get; set; } public int? MotherId { get; set; } public virtual Person Mother { get; set; } public virtual List ChildrenAsFather { get; set; } public virtual List ChildrenAsMother { get; set; } } class PersonConfiguration : EntityTypeConfiguration { public PersonConfiguration() { HasOptional(e => e.Father).WithMany(e => e.ChildrenAsFather) .HasForeignKey(e => e.FatherId); HasOptional(e => e.Mother).WithMany(e => e.ChildrenAsMother) .HasForeignKey(e => e.MotherId); } } 

Answer 2

谢谢你，Eranga，你的回复正是我所需要的！

另外，如果有人使用该方法而不是Eranga使用的配置方法，这里是modelBuilder代码。

 protected override void OnModelCreating(DbModelBuilder modelBuilder) { modelBuilder.Entity(). HasKey(i => i.PersonId); modelBuilder.Entity(). HasOptional(f => f.Father). WithMany(f => f.ChildrenAsFather). HasForeignKey(f => f.FatherId); modelBuilder.Entity(). HasOptional(m => m.Mother). WithMany(m => m.ChildrenAsMother). HasForeignKey(m => m.MotherId); }