Table ID 字段自动附加 table 产生无效列名的名称

Question

我有 table Categories With Id column when insert occur is shows it shows error SqlException: Invalid column name 'CategoriesId'.

 public partial class Categories
    {
        public Categories()
        {
            CategoryTabs = new HashSet<CategoryTabs>();
        }

        public int Id { get; set; }
        public string Title { get; set; }
        public int? ParentId { get; set; }
        public int? SeasonId { get; set; }
        public int? Levels { get; set; }
        public string Image { get; set; }
        public string Description { get; set; }

        public virtual Seasons Season { get; set; }
        public List<Categories> children { get; set; }
        public virtual ICollection<CategoryTabs> CategoryTabs { get; set; }
    }

 public partial class CategoryTabs
    {
        public int Id { get; set; }
        public int? CategoryId { get; set; }
        public int? TabId { get; set; }
         public virtual Categories Category { get; set; }
        public virtual Tabs Tab { get; set; }
    }

Answer 1

CategoriesId 是与

引入的 one-to-many 自身关系关联的外键 property/column 的常规名称

public List<Categories> children { get; set; }

集合导航属性在 Categories 实体内。

查看实体模型，最有可能的想法是为此目的使用 ParentId。由于它不符合 EF Core 命名约定，因此必须使用 ForeignKey 数据注释显式映射它：

[ForeignKey(nameof(ParentId))]
public List<Categories> children { get; set; }

或在 OnModelCreating 内流利 API 覆盖：

modelBuilder.Entity<Categories>()
    .HasMany(e => e.children)
    .WithOne()
    .HasForeignKey(e => e.ParentId);

Table ID 字段自动附加 table 产生无效列名的名称

Table Id field automatically append with table name that produce invalid column name

entity-framework

ef-core-2.2