blocks|key|3779912|text|在我看来完全没问题。ListOfThings属性是否返回底层列表的副本？|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3779913|然后，您将对该列表的一个副本进行排序，该副本随后会丢失，并且在下次调用ListOfThings时，您将获得该列表的一个新副本(按原始顺序)。|3779914|entityMap^0|X|2|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

Looks perfectly fine to me. Is the ListOfThings property returning a copy of the underlying list perhaps?

Then you would be sorting a copy of the list which is then lost and you are given a new copy of the list in the original order the next time ListOfThings is called.

blocks|key|3780275|text|你的基对象会在每次被访问时重新创建列表吗？每次有人要求我帮助解决这个问题，那都是问题所在。也许这个属性正在调用一个数据库，当它被访问时构建列表，等等。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3780276|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Is your base object recreating the list every time its accessed? Every time someone has asked me to help with this issue, that has turned out to be the problem. Maybe the property is calling a database, building the list when its accessed, etc...

blocks|key|1140617|text|我不知道其余的代码，但是试试下面这样的代码怎么样：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1140618|baseObject.ListOfThings.Sort(AddressOf+ThingComparer)+|code-block|syntax|javascript|1140619|(假设您有要调用的共享函数)|1140620|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I don't know the rest of the code, but what about trying something like this : 

<pre><code>baseObject.ListOfThings.Sort(AddressOf ThingComparer) 
</code></pre>

(assuming you got Shared Function to call)

blocks|key|1146180|text|为了理解这里发生了什么，我们需要更多的上下文来了解ListOfThings是如何实现的。特别是，我们需要知道|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1146181|1146182|是一种财产吗？如果是，请向我们展示Get方法|unordered-list-item|1146183|+ListOfThings|1146184|的类型是什么|1146185|它看起来像是一个属性，并且有许多方法可以以这种方式实现它，从而导致这种行为。例如，下面的定义将导致您所看到的确切行为|1146186|Public+ReadOnly+Property+ListOfThings+As+List(Of+Thing)+
++Get
++++Return+New+List(Of+Thing)(someInternalList)
++End+Get
End+Property|code-block|syntax|javascript|1146187|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|T|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|U|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|V|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|W|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|X|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|Y|8|@]|9|@]|A|$O|P]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

To understand what's going on here, we need some more context into how ListOfThings is implemented. In particular we need to know

<ul>
<li>Is it a Property. If so please show us the Get Method</li>
<li>What is the type of ListOfThings</li>
</ul>

It appears to be a property and there are numereous ways this could be implemented in such a way that would cause this behavior. For instance the following definition would cause the exact behavior you are seeing

<pre><code>Public ReadOnly Property ListOfThings As List(Of Thing) 
 Get
 Return New List(Of Thing)(someInternalList)
 End Get
End Property
</code></pre>

I have a slightly odd problem that I think is most likely due to an act of foolishness on my part, but for the life of me I (and other members of my team) can't see it.

I have an object that contains a generic list property which I would like to sort. I have written a comparer class to do this for me and I am calling it in the following way:

<pre><code>baseObject.ListOfThings.Sort(new ThingComparer())
</code></pre>

I have debugged into my compare function and it is returning the right values.

However After the sort call, the list remains unchanged. Have I missed something obvious, or is there something else I need to do.

Many thanks

EDIT: Yes I was being a fool, and the property returning a list was recreating it from scratch each time it was accessed. Thank you for your help everyone, and I will try to learn to check things better before asking for help in future

list.sort not working in vb.net

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我有一个有点奇怪的问题，我认为这很可能是由于我的愚蠢行为，但我(和我的团队中的其他成员)无论如何都看不到它。我有一个对象，它包含一个我想要排序的通用列表属性。我已经为自己写了一个比较器类来做这件事，我用下面的方式调用它：baseObject.ListOfThings.Sort(new ThingComparer())我...

问list.sort在vb.net中不起作用
EN

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问list.sort在vb.net中不起作用EN