如何使用C＃中的元素添加具有特定属性名称的新XML元素 [英] How to add new XML element with a particular attribute name inside with an element in C#

问题描述

我有以下xml文件，我想将新数据添加到名称为TES的特定元素和

I have below xml file and i want to add new data to a particular element with name TES and

<product ip="3,4,4,4,4" op="33" />

<?xml version="1.0" encoding="utf-8"?>
<root>
  <Brand name="TES">
   
    <product ip="40,67, 0,0,0" op="0" />
    <product ip="49,25, 4,4,0" op="0" />
    <product ip="40,5, 3,64,0" op="0" />
    <product ip="85,27, 6,6,0" op="0" />
    <product ip="8,27, 6,6,0 " op="0" />
    <product ip="23,5, 4,1,0" op="0" />
    <product ip="26,25,0,33,10" op="0" />
    <product ip="100,0,0,0,0" op="0" />
  </Brand>
  <Brand name="SW">
    <product ip="0, 1, 0,0,0" op="1" />
    <product ip="0, 100,0,0,0" op="1" />
    <product ip="0, 25,0,75,0" op="1" />
    <product ip="0, 25,0,75,0" op="1" />
    <product ip="0, 35,0,55,0 " op="1" />
    <product ip="42, 43,0,82,6" op="1" />
    <product ip="24, 7,1,17,0" op="1" />
  </Brand>
</root>

我尝试过：



i在c＃下方试过，但它只为第一个现有元素添加属性

What I have tried:

i had tried below c# but it only add attributes to first existing element

XElement root = XElement.Load("sample.xml");
            root.Element("Brand").Element("product").Add( new XAttribute("IP", "3,4,4,4,4"),new XAttribute("OP", "33"));
            root.Save("output.xml");

推荐答案

在这里猜一下，因为它不是你要问的，但是你想要这样做......

Taking a guess here, because its not quite what you are asking, but are you trying to do this...

XElement element = root
  .Elements("Brand")
  .Where(e => e.Attribute("name").Value == "TES")
  .Single();

element.Add(
  new XElement("product",
    new XAttribute("ip", "3,4,4,4,4"),
    new XAttribute("op", "33")));

如果没有，我会提供两个小的XML文档： BEFORE文档和AFTER文档，显示您想要做的事情（正如我在评论中所建议的那样）。

If not, I'd provide two small XML documents: a BEFORE document and an AFTER document, showing what you want to do (as I suggested in the comments).

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