INSERT 語句與 FOREIGN KEY 約束沖突 - asp.net.mvc5

Question

當我嘗試將數據插入門票表時出現該錯誤：

INSERT 語句與 FOREIGN KEY 約束“FK_dbo.Tickets_dbo.Screenings_Date_HallId”沖突。 沖突發生在數據庫“aspnet-CinemaProject-20210105112627”的表“dbo.Screenings”中。 該語句已終止。

public class Ticket
{
    [Key]
    [Column(Order = 1)]
    public short SeatNumber { get; set; }


    [ForeignKey("Date, HallId")]
    public Screening Screening { get; set; }

    [Key]
    [Column(Order = 2)]
    public DateTime? Date { get; set; }


    [Key]
    [Column(Order = 3)]
    public byte HallId { get; set; }




    public DateTime? CreationTime { get; set; }

    public bool Paid { get; set; }
}

.

public class Screening
{
    [Key]
    [Column(Order = 1)]
    public DateTime? Date { get; set; }

    [ForeignKey("MovieId")]
    public Movie Movie { get; set; }

    [Required]
    public int MovieId { get; set; }
    
    
    [ForeignKey("HallId")]
    public Hall Hall { get; set; }

    [Key]
    [Column(Order = 2)]
    [Required]
    [Display(Name = "Hall")]
    public byte HallId { get; set; }

    [Required]
    public short Price { get; set; }

}

.

public class Hall
{
    public byte Id { get; set; }
}

誰能幫我？

編輯：

(篩選表)^^

Answer 1

發生錯誤是因為您嘗試作為外鍵插入“Ticket”表中的日期在“screening”表中不存在作為主鍵