var PreGruop = from pre in presale
                           group pre by pre.UserID into dateGroup
                           select new
                           {
                               xl = dateGroup.Sum(x => x.XiaoLiang),
                               zt = dateGroup.Sum(x => x.ZhanTingXiaoLiang),
                               cd = dateGroup.Sum(x => x.ZhanTingXiaoLiang),
                               hy = dateGroup.Sum(x => x.CheDai),
                               ew = dateGroup.Sum(x => x.ErWang),

                               sx = dateGroup.Sum(x => x.XinCheShangXian),
                               jq = dateGroup.Sum(x => x.XinCheJiaoQiangXian),
                               bf = dateGroup.Sum(x => x.XinCheChangXianBaoFei),

                               userName = dateGroup.Select(x => x.User.Name)
                           };