使用linq将数据添加到现有xml文件

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

我是.net初学者。我需要向xml文件添加一些数据

the xml file is:

xml文件是：

<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>

I need to add

我需要补充一下

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

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.

到各自的标签。我现在面临的问题是我需要深入两个级别才能写入各自的标签，我不知道该怎么做。

I tried the below code: (not working)

我尝试了下面的代码:(不工作）

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"))));

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.

必须有其他方法来实现这一点，我不知道。与linq无关的答案也是受欢迎的。但更喜欢linq，因为我在我的项目中实现了完整的linq。

Please Help
Thanks in Advance.

请提前帮助谢谢。

1 个解决方案

#1

Assuming you have the original document:

假设你有原始文件：

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

then create a new element (not a document)

然后创建一个新元素（而不是文档）

  //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"));

And then insert it:

然后插入它：

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

  doc.Save(....);

#1