我建立了一个“用户到用户角色”多对多关系,类似于此处的示例。 https://www.learnentityframeworkcore.com/configuration/many-to-many-relationship-configuration
但是,当我尝试查询Users时,它会按预期返回用户,但是UserRoles(示例中的BookCategories)始终为null。我需要使用Include()和ThenInclude()吗?我尝试使用每种方法,但这似乎也不起作用。
我已经尝试过类似的事情
var users = _context.TFCpUserTests.Include(e =>
e.TFCpUserRoleTests).ThenInclude(e => e.TFCpRoleTest);
但是由于某些原因我不能使用ThenInclude()。这是我正在使用的模型
public class TFCpRoleTest
{
public int Id { get; set; }
public string Name { get; set; }
public virtual ICollection<TFCpUserRoleTest> TFCpUserRoleTests { get; set; }
}
public class TFCpUserTest
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Username { get; set; }
public string Email { get; set; }
public byte[] PasswordHash { get; set; }
public byte[] PasswordSalt { get; set; }
public virtual ICollection<TFCpUserRoleTest> TFCpUserRoleTests { get; set; }
}
public class TFCpUserRoleTest
{
public int UserId { get; set; }
public virtual TFCpUserTest TFCpUserTest { get; set; }
public int RoleId { get; set; }
public virtual TFCpRoleTest TFCpRoleTest { get; set; }
}