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[英]How do i group a list of dynamic objects using linq given that the property names are dynamic?
[英]How do I group a list using Linq
我的情况如下:
我有以下数据-
1, samename, Grand Central, New York, 12
2, samename, Opera House, Sydney, 12
3, samename, Opera House, Sydney, 12
4, name2, Emirates, London, 13
5, name3, Opera House, Sydney, 14
我想将其输出为两个表
12, samename
13, name2
14, name3
Grand Central, New York, 12
Opera House, Sydney, 12
Opera House, Sydney, 12
Emirates, London, 13
Opera House, Sydney, 14
我继承的这确实是一个糟糕的设计-我正在尝试使其更好..而不破坏旧代码。
您需要分两步进行操作,首先将它们GroupID
在Name
和GroupID
:
var result = list.GroupBy(x=>new {x.GroupID, x.Name})
.Select(g=> new { GroupID = g.Key.GroupID, Name = g.Key.Name});
在第二种情况下, Place
它们与其他三列( GroupID
, Place
和Location
) GroupID
:
var result = list.GroupBy(x=>new {x.GroupID, x.Location,x.Place})
.Select(g=> new
{
GroupID = g.Key.GroupID,
Location = g.Key.Location,
Place = x.Key.Place
});
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