C＃实体框架-无效的列名

Question

我有两个类的上下文：

在Brand类中，有一个Bike对象列表。

当我尝试将Bike列表放入Brand实例时，程序将向我返回此异常：

Invalid column name 'Strokes'.
Invalid column name 'BrandBike_BrandID'.

这是我的情况：

public class MyContext: DbContext
{
    public DbSet<Brand> Brands{ get; set; }
    public DbSet<Bike> Bikes{ get; set; }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        Database.SetInitializer<MyContext>(null);
        base.OnModelCreating(modelBuilder);
    }
}

这是我名为Brand的课程：

public class Brand
{
    [Key]
    public int BrandID { get; set; }
    [Required]
    public string Name { get; set; }
    public Country Nationality { get; set; }

    public virtual List<Bike> Models { get; set; }
}

public class Bike
{
    [Key]
    public int BikeID { get; set; }

    public string Model { get; set; }
    public BikeCategory Category { get; set; }
    public int EngineCapacity { get; set; }
    public int Strokes { get; set; }
    public double Price { get; set; }

    public virtual Brand BrandBike { get; set; }
}

这是Brand表结构：

CREATE TABLE [dbo].[Brands] (
[BrandID]     INT            IDENTITY (1, 1) NOT NULL,
[Name]        NVARCHAR (MAX) NULL,
[Nationality] INT            NOT NULL,
CONSTRAINT [PK_dbo.Brands] PRIMARY KEY CLUSTERED ([BrandID] ASC)
);

自行车表的结构如下：

CREATE TABLE [dbo].[Bikes] (
[BikeID]        INT            IDENTITY (1, 1) NOT NULL,
[Model]       NVARCHAR (MAX) NULL,
[Category]      INT            NOT NULL,
[EngineCapacity]    INT            NOT NULL,
[Price]        FLOAT (53)     NOT NULL,
[Brand_BrandID] INT            NULL,
CONSTRAINT [PK_dbo.Bikes] PRIMARY KEY CLUSTERED ([BikeID] ASC),
CONSTRAINT [FK_dbo.Bikes_dbo.Brands_Brand_BrandID] FOREIGN KEY 
([Brand_BrandID]) REFERENCES [dbo].[Brands] ([BrandID])
);


GO
CREATE NONCLUSTERED INDEX [IX_Brand_BrandID]
ON [dbo].[Bikes]([Brand_BrandID] ASC);

我该如何克服这个问题？

Answer 1

要解决“无效的列名'BrandBike_BrandID'”错误，您需要在表Bike添加一个名为BrandId的列。 此列应存储与自行车相关的BrandId 。

我没有您的Bike表结构，但是“无效列名'Strokes'”表示该表中没有名为Strokes列。