编辑 XDocument 中的特定元素 [英] Edit specific Element in XDocument

问题描述

我最近开始学习 C#，但在使用 XML.Linq 存储数据时遇到了问题.我希望这个问题是可以理解的，因为我还不熟悉所有正确的术语，而且英语不是我的第一语言.

I recently started learning C# and I ran into a problem using XML.Linq to store data. I hope the question is understandable as I am not familiar with all the correct terms yet and as English isn't my first language.

我阅读了很多问题/谷歌搜索，但我自己无法弄清楚.

I read a lot of Questions/googled but I can not figure it out myself.

我想更新一个现有的 XDocument 文件，如下所示:

I want to update an existing XDocument File that looks like this:

<Data>
  <IDCounter>2</IDCounter>
  <Highscores>
     .......
  </Highscores>
  <savegames>
    <savegame>
       <IdNumber>1</IdNumber>
       <salutation>Mr</salutation>
       <prename>Prename1</prename>
       <surname>Surname1</surname>
       <maximumbalance>100</maximumbalance>
       <balance>100</balance>
    </savegame>
    <savegame>
       <IdNumber>2</IdNumber>
       <salutation>Mr</salutation>
       <prename>Prename2</prename>
       <surname>Surname2</surname>
       <maximumbalance>100</maximumbalance>
       <balance>100</balance>
     </savegame>
   </savegames>
</Data> 

更改特定元素中的值的最简单方法是什么?

What is the easiest way to change a value in a specific Element?

假设我想更改特定存档的平衡.

我想通过 IdNumber(这些数字是唯一的)访问存档游戏

I want to access the savegame by IdNumber (these numbers are unique)

然后我想更改 balance 的值(例如更改为 50)，然后将这些更改保存到我的文档中.

Then I want to change the value of balance (for example to 50) and then save these changes to my document.

推荐答案

随着using System.Xml.Linq;就变成

 var doc = XElement.Load(fileName);
 var saveGame = doc
      .Element("savegames")
      .Elements("savegame")
      .Where(e => e.Element("IdNumber").Value == "2")
      .Single();

 saveGame.Element("balance").Value = "50";

 doc.Save(fileName);

这篇关于编辑 XDocument 中的特定元素的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！