[ASP.NET]EF选一个空表的情况

public List<DAL.StuFillAnswers> FillsToCheck(int sid,int eid)
        {
            using (DAL.ExamSysEntities db = new DAL.ExamSysEntities())
            {
                return db.StuFillAnswers.Where(x => x.StuID == sid && x.ExamID == eid).ToList();
            }
        }

返回的是count为0的list

[ASP.NET]EF选一个空表的情况