接触LINQ不久,写的可能不规范,但我要的分组统计功能实现了

贴出来供大家参考,如有高手还请指教,

 

private List<OutBoundDetailExtend> _outBoundDetailExtendList;
//赋值过程略
…………
var tmpList 
= from L in _outBoundDetailExtendList
                          group L by 
new { L.LocationId, L.PalletCode, L.SkuCode, L.Color, L.Size }
                              into S
                              select 
new OutBoundDetailExtend
                                         {
                                             AmountReceivable 
=
                                                 S.Select(O 
=> O.AmountReceivable).First(),
                                             BillId 
= S.Select(O => O.BillId).First(),
                                             Quantity 
= S.Sum(O => O.Quantity),
                          …… 
//实体赋值过程略                                           
                          SkuCode = S.Key.SkuCode,   
                                           UnitPrice = S.Select(O => O.UnitPrice).First()
                                         };
            _outBoundDetailExtendList 
= tmpList.ToList();   

 

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