Entity framework Linq到实体，插入外键

我第一次使用ADO实体框架，不确定插入包含外键的db recored的最佳方法

这是我正在使用的代码，如果对此有任何意见和建议，我将不胜感激

using (KnowledgeShareEntities entities = new KnowledgeShareEntities())
            {
                Questions question = new Questions();
                question.que_title = questionTitle;
                question.que_question_text = questionText;
                question.que_number_of_views = 0;
                question.que_is_anonymous = isAnonymous;
                question.que_last_activity_datetime = DateTime.Now;
                question.que_timestamp = DateTime.Now;
                question.CategoriesReference.Value = Categories.CreateCategories(categoryId);
                question.UsersReference.Value =  Users.CreateUsers(userId);
                entities.AddToQuestions(question);
                entities.SaveChanges();

                return question.que_id;
            }  

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你应该使用类似于

question.UsersReference.EntityKey =  new EntityKey("MyEntities.Users",
    "ID", userId);

设置外键不需要用户对象，只需使用ID即可