Question

在我的EF Core 3.1的代码优先实现中，我具有以下三个实体：

   [Table("Customers")]
   public class Customer
    {
        public int Id { get; set; }

        public virtual ICollection<CustomerAddress> Addresses { get; set; } = new HashSet<CustomerAddress>();
    }

    [Table("Address_Customers")]
    public class CustomerAddress : AddressBase
    {
        [ForeignKey("FK_Address_Customers_CustomerId_Customers_Id")]
        public int CustomerId { get; set; }

        public Customer Customer { get; set; }
    }

    [Table("Addresses")]
    public abstract class AddressBase
    {
        public int Id { get; set; }

        public Nullable<bool> Active { get; set; }

        [MaxLength(50)]
        public string StreetAddress { get; set; }

    }

这是我的代码：

    var customer = new Customer() { Name = "GetAddresses", CreatedAt = new DateTimeOffset(DateTime.Now) };
    context.Customers.Add(customer);
    context.SaveChanges();

    customer.Addresses.Add(new CustomerAddress() { CustomerId = customer.Id, Customer = customer, StreetAddress = "100 Main St.", CreatedAt = new DateTimeOffset(DateTime.Now)});
    customer.Addresses.Add(new CustomerAddress() { CustomerId = customer.Id, Customer = customer, StreetAddress = "101 Main St.", CreatedAt = new DateTimeOffset(DateTime.Now)});
    customer.Addresses.Add(new CustomerAddress() { CustomerId = customer.Id, Customer = customer, StreetAddress = "102 Main St.", CreatedAt = new DateTimeOffset(DateTime.Now)});
    context.SaveChanges();

增加/保存了客户。但是，在 second context.SaveChanges()上，我收到一个SqlException错误，提示：

无效的列名“有效”。
无效的列名“ StreetAddress”。
无效的列名“ Id”。
无效的列名“ Id”。

此外，AddressBase类的所有其余列（此处未显示）。

我在做什么错了？

实体框架核心继承“无效列”

0 个答案: