实体框架 - 如何使用实体关联？

When I have tables in my database that have PK/FK relationships (int) and when they are modeled by the Entity Framework designer everything seems as it should be. I can write the code below and everything seems like it's going to work fine as well but then when I run the code I get an error on the project.Status.StatusName saying the Object reference not set to an instance of an object. I guess I was under the impression that the framework populated the associated entities when you populate the parent entity.When I have tables in my database that have PK/