我想我理解以下错误，但不确定如何解决，

  

“ Classname”：“ System.NotSupportedException”，“ Message”：“实体或   复杂类型'Childaccessory'不能在LINQ中构造为   实体查询。”，

我应该创建一个DTO并将其从存储库中返回以解决该问题，还是有更好的解决方法？

我正在尝试获取儿童配件，但还包括父表中的默认配件。

public class ChildaccessoryRepository: IChildaccessoryRepository {
 private readonly EquipmentContext _context;

 public DirectoryEquipmentRepository(EquipmentContext context) {
  _context = context;
 }

 public IEnumerable < Childaccessory > getchildaccessories(Guid clientReference) {
  var accessories = from a in _context.accessory
  join ca in _context.Childaccessory
  on new {
   accessoryId = a.Id,ClientReference = clientReference
  }
  equals new {
   ca.accessoryId,ca.ClientReference
  }
  into ca_join
  from ca in ca_join.DefaultIfEmpty()
  where
  ca.Isactive == true ||
   ca.Isactive == null
  //select ca;
                         select new Childaccessory
                                   {
                                       accessoryId = ca.accessoryId,SomeOtherColumn = ca.SomeOtherColumn,accessory = ca.accessory,});

 }
}