Question

我试图在网上商店项目中创建购买历史，我希望课程历史从购物车中获得产品，我从未做过多对一的关系（我认为是最适合的激动），您如何看待它？

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


            public ClothesType Type { get; set; }

            public int Amount { get; set; }

            [Range(10, 150)]
            public double Price { get; set; }

            public string ImagePath { get; set; }

            public virtual History historyID { get; set; }
        }

public class History
    {
        [Key]
        [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
        public int historyID { get; set; }
        public string Email { get; set; }
        public string Address { get; set; }
        public string City { get; set; }
        public DateTime ShipDate { get; set; }
        public int Price { get; set; }
        public virtual ICollection<Clothes> HistClothes { get; set; }
    }

Answer 1

命名约定！如果您希望历史记录中有许多衣服并且只有一个历史记录，那么下面的代码就会很顺利：

[Table("Clothes")]
public class Clothe
    {
        [Key]
        public int Id { get; set; }
        public ClothesType Type { get; set; }
        public int Amount { get; set; }
        [Range(10, 150)]
        public double Price { get; set; }
        public string ImagePath { get; set; }
        public History historyID { get; set; } 
    }

public class History
{
    [Key]
    public int historyID { get; set; }
    public string Email { get; set; }
    public string Address { get; set; }
    public string City { get; set; }
    public DateTime ShipDate { get; set; }
    public int Price { get; set; }
    public virtual ICollection<Clothe> ClothesHistory { get; set; }

    public History()
    {
        ClothesHistory = new List<Clothe>();
    }
}

如果你想拥有相同衣服的历史记录和每个历史记录的单个衣服，那么这个代码会顺利进行：

[Table("Clothes")]
public class Clothe
    {
        [Key]
        public int Id { get; set; }
        public ClothesType Type { get; set; }
        public int Amount { get; set; }
        [Range(10, 150)]
        public double Price { get; set; }
        public string ImagePath { get; set; }
        public ICollection<History> Histories { get; set; } 

        public History()
        {
            Histories = new List<History>();
        }
    }

public class History
{
    [Key]
    public int historyID { get; set; }
    public string Email { get; set; }
    public string Address { get; set; }
    public string City { get; set; }
    public DateTime ShipDate { get; set; }
    public int Price { get; set; }
    [Required]
    public Clothe RelatedClothe { get; set; }
}

MVC-5中的1对多关系

1 个答案: