Question

我有两个班级：

   public partial class Alergy
    {
        public int ID { get; set; }
        public Nullable<int> VaccinationAlergyID { get; set; }
        public string PHN { get; set; }
        public virtual VaccinationAlergy VaccinationAlergy { get; set; }
    }

  public partial class VaccinationAlergy
    {
        public VaccinationAlergy()
        {
            this.Alergies = new HashSet<Alergy>();
        }
        public int VaccinationAlergyID { get; set; }
        public string VaccinationAlergyName { get; set; }
        public virtual ICollection<Alergy> Alergies { get; set; }
    }

我使用以下方法从这些模型中获取两个值：

  var vaccination = db.Alergies.Where(x => x.PHN == phn)
  .Select(x => new { VaccinationAlergyID= x.VaccinationAlergyID,
   VaccinationAlergyName= x.VaccinationAlergy.VaccinationAlergyName}).ToList();

我只获得第一个VaccinationAlergyName，其余的是VaccinationAlergyName的ID。
非常感谢您的建议。

Answer 1

尝试

 var vaccination = db.Alergies.Where(x => x.PHN == phn).Include(x=> x.VaccinationAlergy).Select(x => new { VaccinationAlergyID= x.VaccinationAlergyID,VaccinationAlergyName=x.VaccinationAlergy.VaccinationAlergyName}).ToList();

C＃EF列表来自两个类

1 个答案: