使用 linq 将数据添加到现有的 xml 文件 [英] add data to existing xml file using linq

问题描述

我是 .net 初学者.我需要在xml文件中添加一些数据

I am a .net beginner. I need to add some data to xml file

xml 文件为:

<stock>    --- 1st level  /* i dont want to create this because this exists */ 
  <items>  --  2nd level
    <productname>Toothpaste</productname>
    <brandname>Colgate</brandname>
    <quantity>12</quantity>
    <price>10</price>
  </items>
  <items>
    <productname>Toothpaste</productname>
    <brandname>Pepsodent</brandname>
    <quantity>20</quantity>
    <price>12</price>
  </items>
</stock>

我需要添加

productname --> Toothpaste
brandname   --> CloseUp
quantity    --> 16
price       --> 15

到它们各自的标签.我现在面临的问题是我需要深入两层才能写入各自的标签，我不知道该怎么做.

to their respective tags. The problem I am facing now is that I need to go two levels deep to write to their respective tags, which i dont know how to do.

我尝试了以下代码:(不工作)

I tried the below code: (not working)

XDocument doc = new XDocument(      
                  new XElement("stock",  /* how to go inside existing "stock"? */
                     new XElement("items", 
                          new XElement("productname", "Toothpaste"),
                          new XElement("brandname", "CloseUp"),
                          new XElement("quantity","16"),
                          new XElement("price","15"))));

必须有其他一些我不知道的方法来实现这一点.
也欢迎与 linq 无关的答案.但更喜欢 linq，因为我已经在我的项目中实现了完整的 linq.

There must be some other way to achieve this which I dont know.
Answers not related to linq are also welcome. but more preference to linq because I have implemented full linq in my project.

请帮忙
提前致谢.

Please Help
Thanks in Advance.

推荐答案

假设你有原始文档:

 var doc = XDocument.Load(...);

然后创建一个新元素(不是文档)

then create a new element (not a document)

  //XDocument doc = new XDocument(      
  //  new XElement("stock",  /* how to go inside existing "stock"? */
   var newElement =  new XElement("items", 
                      new XElement("productname", "Toothpaste"),
                      new XElement("brandname", "CloseUp"),
                      new XElement("quantity","16"),
                      new XElement("price","15"));

然后插入:

  doc.Element("stock").Add(newElement);

  doc.Save(....);

这篇关于使用 linq 将数据添加到现有的 xml 文件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！