实体框架linq包括

Question

我有以下Linq查询我正在使用实体框架。

var res = from a in _db.Articles
                  from auth in a.Authors
                  where papers.Contains(a.JoomlaId)
                  select auth.Institution;

问题是我的机构类有一个名为“Type”的变量，类型为“InstitutionType”我需要包含，我不知道该怎么做。

Answer 1

var res = from a in _db.Articles.Include("Authors") 
                                .Include("Authors.Institution")
                                .Include("Authors.Institution.Type")
                  from auth in a.Authors
                  where papers.Contains(a.JoomlaId)
                  select auth.Institution;