在linq中对不带AsEnumerable的实体调用自定义方法

目前我有一些实体框架代码,如下所示:

return _context
           .MyData
           .OrderBy(x => x.Name)
           .Select(x => new CustomObject { Name = x.Name, Description = x.Description });

CustomObject 编写一个单独的函数,如下所示:

 return _context
           .MyData
           .OrderBy(x => x.Name)
           .Select(x => CustomObjectFactory.Create(x));

但当我这么做的时候

Linq to entities无法识别该方法

错误。我知道我可以打个电话给 AsEnumerable() :

return _context
          .MyData
          .OrderBy(x => x.Name)
          .AsEnumerable()
          .Select(x => CustomObjectFactory.Create(x));

对于奖励积分,我还想知道如何做到这一点:

 return _context
            .MyData
            .OrderBy(x => x.Name)
            .CreateCustomObject()