外键映射到entity framework中的复合键

尝试首先与entity framework代码建立以下关系。 以下代码不起作用我尝试了很多变化…有没有人有线索？

CONSTRAINT [FK_EVENT_Contact] FOREIGN KEY (Patient_ID,[Contact_ID]) REFERENCES [PatientContact](Patient_ID,Person_ID) public class PatientContact { [Key, Column(Order = 0)] [DatabaseGenerated(DatabaseGeneratedOption.None)] public int Person_ID { get; set; } public virtual Person Person { get; set; } [Key, Column(Order = 1)] [DatabaseGenerated(DatabaseGeneratedOption.None)] public int Patient_ID { get; set; } public virtual Patient Patient { get; set; } } public class Event { [Key] public int Event_ID { get; set; } [Required] public int EventType_ID {get;set;} public virtual EventType EventType { get; set; } [ForeignKey("Patient")] public int Patient_ID { get; set; } public virtual Patient Patient { get; set; } [ForeignKey("PatientContact")] public int Contact_ID { get; set; } public virtual PatientContact PatientContact { get; set; } } 

Answer 1

你有两个选择。

使用属性，例如：

 [ForeignKey("PatientContact"), Column(Order = 0)] public int Person_ID{ get; set; } [ForeignKey("PatientContact"), Column(Order = 1)] public int Patient_ID{ get; set; } public virtual PatientContact PatientContact { get; set; } 

使用模型构建器（流畅的api）

 modelBuilder.Entity() .HasRequired(p => p.PatientContact) .WithMany() .HasForeignKey(p => new {p.Person_ID, p.Patient_ID});