public class Test
    {
        public string AccidentNo;
        public string Time;
        public string Name;
        public string Sex;
        public string PeopleAge;
        public string CertificateNo;
        public string TrafficTypeID;
        public string PhoneNo;
        public string CarNo;
        public string LostMoney;
        public string IsDead;
        public string EName;
        public string PoliceNo;
        public string Cname;
        public string DeptID;
    }

        public List<Test> selecta()
        {

            var query = from A in Context.AccidentMsg
                        join B in Context.PeopleMessage on A.AccID equals B.AccID
                        join C in Context.SysDictionary on A.DealWayID equals C.ID
                        //join D in Context.PoliceMan on A.PoliceNo equals D.PoliceNo
                        join E in Context.SysDictionary on B.Responsibility equals E.ID

                        select new Test
                        {
                            AccidentNo=A.AccidentNo,
                            Time=A.Time,
                            Place=A.Place,
                            Name=B.Name,
                            Sex=B.Sex,
                            PeopleAge=B.PeopleAge,
                            CertificateNo=B.CertificateNo,
                            TrafficTypeID=B.TrafficTypeID,
                            PhoneNo=B.PhoneNo,
                            CarNo=B.CarNo,
                            LostMoney=B.LostMoney,
                            IsDead=B.IsDead,
                            Ename = E.Name,
                            PoliceNo=A.PoliceNo,      //警员编号->->->警员姓名
                            Cname = C.Name,
                            DeptID=A.DeptID
                        };
            return query.ToList();
        }