[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
我的情況如下:
我有以下數據-
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
我想將其輸出為兩個表
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
我繼承的這確實是一個糟糕的設計-我正在嘗試使其更好..而不破壞舊代碼。
您需要分兩步進行操作,首先將它們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});
在第二種情況下, Place
它們與其他三列( 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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