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这是我从数据库读取到数据表中的数据。LINQ订购分组数据
的数据表称为表现重塑。
对于每个相同/不同的UnitType + UnitZoom + MemberZoom,我创建一个新的Unit并将MemberId读入MemberListId中 - 这应发生在由MemberOrder的编号给定的顺序中。示例数据:
1单元:ABC - > P1,P2
UNIT2:1 2 3 - > P9,P12,P4
UNIT3:H23 B10 T15 - > X4,T5,Z3,Y1
我现在是不正确的排序代码:
var groupedCollection = table.AsEnumerable()
.GroupBy(row => new
{
UType = row.Field<string>("UnitType"),
UZoom = row.Field<string>("UnitZoom"),
MZoom = row.Field<string>("MemberZoom"),
MOrder = row.Field<int>("MemberOrder"),
// I DO NOT WANT the MemberOrder to be in the Group Key, but later on I use this Property to order by it...
});
var unitCollection = groupedCollection
.Select(g => new Unit
{
UnitType = g.Key.UType,
UnitZoom = g.Key.UZoom,
MemberZoom = g.Key.MZoom,
MemberIdList = g.Select(r => r.Field<string>("MemberId")).OrderBy(b => g.Key.MOrder).ToList(),
});
List<Unit> units = unitCollection.ToList();