EF無法首先識別代碼的Column屬性？

Question

對於“代碼優先”實體，我具有以下類定義：

public class Matches
{
    [Key]
    [Required]
    [Column(Order = 1)]
    public Guid MatchGroup { get; set; }

    [Key]
    [Required]
    [Column(Order = 2)]
    public long ProcedureId { get; set; }

    public long MatchLevelId { get; set; }

    [ForeignKey("ProcedureId")]
    public virtual Procedure Procedure { get; set; }

    [ForeignKey("MatchLevelId")]
    public virtual ProcedureMatchLevel MatchLevel { get; set; }
}

但是，在創建初始遷移時，出現以下錯誤：

Unable to determine composite primary key ordering for type 
'Entities.Procedures' Use the ColumnAttribute or the HasKey 
method to specify an order for composite primary keys.

如您所見，我正在使用[Column]屬性。

有人遇到過這個問題嗎？ 我嘗試使用[Key, ForeignKey("Procedure")]切換具有相同錯誤的[ForeignKey]聲明處於哪個屬性。

---

程序類：

[Table("ProcedureList")]
public class Procedure
{
    [Required]
    public int ProcedureId { get; set; }
    [Required]
    public string Code { get; set; }
    [Required]
    public string Description { get; set; }
}

Answer 1

您還需要為Procedure類定義主鍵

[Table("ProcedureList")]
public class Procedure
{
    [Key]
    [Required]
    public int ProcedureId { get; set; }
    [Required]
    public string Code { get; set; }
    [Required]
    public string Description { get; set; }
}