从linq查询返回对象图

我有一辆

汽车

型号：

public class Vehicle
{
    [Key]
    public int ID { get; set; }
    public string Title { get; set; }
    ...
    public IEnumerable<VehiclePolicy> Policies { get; set; }
}

public class VehiclePolicy
{
    [Key]
    public int Id { get; set; }

    public int VehicleID { get; set; }
    public Vehicle Vehicle { get; set; }

    public DateTime EffectiveFrom { get; set; }
    public DateTime? EffectiveTo { get; set; }
}

以及EF核心5数据集：

public virtual DbSet<Vehicle> Vehicles { get; set; }
public virtual DbSet<VehiclePolicy> VehiclePolicies { get; set; }

---

是否有更简单的方法返回

车辆

图形，而不必“手动”合成它？

实际上正是出于此目的，我们引入了

包括
：

var query=context.Vehicles
.包括（v=>v.政策）
.OrderBy（v=>v.Title）；

from v in _context.Vehicles
join vp in _context.VehiclePolicies on v.ID equals vp.VehicleID into vvp
from vehiclePolicy in vvp.DefaultIfEmpty()
orderby v.Title
select new Vehicle 
{
  ID = v.ID,
  Title = v.Title,
  ...
  Policies = vehiclePolicy
}