Question

我有一个（People）或Users对象，我正在使用类继承来创建各种对象。

但是我收到错误列INVALID COLUMN，当我添加对象（数据库中存在的Users_Accounts及其下面的相应列）时，出现错误

我在做什么错了？

错误消息处理请求时发生未处理的异常。 SqlException：无效的列名称'Users_AccountsAccountID'。无效的列名“ Users_AccountsAccountID”。无效的列名“ Users_PhonePhoneID”。

namespace Accounts.i_EF.Accounts
{
public class Users
{
    [Key]
    public int UserID { get; set; }
    public string Email { get; set; }
    public Guid UniqueID { get; set; }
    public DateTime Dates { get; set; }
    public bool IsSuspended { get; set; }


     public Users_Accounts Users_Accounts { get; set; }


}
public class Users_Accounts
{
    [Key]
    public int AccountID { get; set; }
    public string UniqueID { get; set; }
    public Title Title { get; set; }
    public string First_Name { get; set; }
    public string Last_Name { get; set; }
    public Gender Gender { get; set; }
    public Users_Phone Users_Phone { get; set; }
    public string Email { get; set; }

    public DateTime  Dates { get; set; }
    public bool IsSuspended { get; set; }
}
public enum Gender
{
    male,female

}

和我的控制器代码

 var user = HttpContext.User.Identity.Name.ToString();
        var DataContext = _context.Users.Include(c => c.Users_Accounts);


return View(await DataContext.SingleOrDefaultAsync(c => c.Email == user && !c.IsSuspended));

Answer 1

尝试以下代码：

namespace Accounts.i_EF.Accounts
    {
    public class Users
    {
        [Key]
        public int UserID { get; set; }
        public string Email { get; set; }
        public Guid UniqueID { get; set; }
        public DateTime Dates { get; set; }
        public bool IsSuspended { get; set; }
        public int UserAccountID { get; set; }
        [ForeignKey(nameof(UserAccountID))]
        public Users_Accounts Users_Accounts { get; set; }


    }
    public class Users_Accounts
    {
        [Key]
        public int AccountID { get; set; }
        public string UniqueID { get; set; }
        public Title Title { get; set; }
        public string First_Name { get; set; }
        public string Last_Name { get; set; }
        public Gender Gender { get; set; }
        public int UserPhoneID { get; set; }
        [ForeignKey(nameof(UserPhoneID))]
        public Users_Phone Users_Phone { get; set; }
        public string Email { get; set; }

        public DateTime  Dates { get; set; }
        public bool IsSuspended { get; set; }

        public int UserID { get; set; }
        [ForeignKey(nameof(UserID ))]
        public Users Users { get; set; }
    }
    public enum Gender
    {
        male,female

    }

类对象-层次结构和继承（不工作）

1 个答案: