实体框架.Include()另一个Navigation属性的导航

Question

我有一个实体测试.它包含Navaigation属性问题和问题包含导航属性QuestionLocale.

var test = context.Tests
       .Include("Question")
       .FirstOrDefault();

按预期工作.但如何包含QuestionLocale呢？

Answer 1

你可以用do:

var test = context.Tests
                  .Include("Question.QuestionLocale")
                  .FirstOrDefault();

Answer 2

现在看到ThenInclude微软文档，它为我解决了这个问题

var test = context.Tests.Include(x => x.Question).ThenInclude(q => q.QuestionLocale).FirstOrDefault();