从 List 中删除具有重复属性的对象 [英] Remove objects with a duplicate property from List

问题描述

我有一个 C# 对象列表.所有对象都包含一个属性 ID.有几个对象具有相同的 ID 属性.

I have a List of objects in C#. All of the objects contain a property ID. There are several objects that have the same ID property.

如何在每个 ID 属性只有一个对象的情况下修剪列表(或创建新列表)?

How can I trim the List (or make a new List) where there is only one object per ID property?

[从列表中删除任何额外的重复项]

[Any additional duplicates are dropped out of the List]

推荐答案

如果你想避免使用第三方库，你可以这样做:

If you want to avoid using a third-party library, you could do something like:

var bar = fooArray.GroupBy(x => x.Id).Select(x => x.First()).ToList();

这将按 Id 属性对数组进行分组，然后选择分组中的第一个条目.

That will group the array by the Id property, then select the first entry in the grouping.

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