C# 搜索包含在xml中（如果找到）替换整个节点

我的xml文件：

<?xml version="1.0" encoding="utf-8"?>
<layout name="layout">
  <section name="Header">
    <placeholder name="headers" width="30" class="header">sam,pam</placeholder>
  </section>
  <section name="Content">
    <placeholder name="RightA" width="55">location</placeholder>
  </section>
</layout>

而不是：

<placeholder name="headers" width="30" class="header">sam,pam</placeholder>

---

谢谢。

尝试使用XDocument更好地控制查找和替换

XDocument myDocument = XDocument.Load("path to my file");
foreach (XElement node in myDocument.Root.Descendants("placeholder"))
{
    if (node.Value.Contains("same"))
    {
        XElement newNode = new XElement("placeholder");
        newNode.Add(new XAttribute("header", node.Attribute("header").Value); // if you want to copy the current value
        newNode.Add(new XAttribute("width", "some new value"));
        node.ReplaceWith(newNode);
    }
}

---

如果节点包含sam，您将用什么替换它，是sam，sam2，pamNop我要替换整个节点bcz

width=“4,5,91”

不同：（@freebird

sam，pam

repalce with

sam，sam2，pam

。有什么想法吗？在c#中可能吗？让我来计算一下它是可能的。你能用林琦吗？我无法使用链接抱歉，这是我的项目需求：(

XmlDocument doc = new XmlDocument();
string sFileName = @"FileNameWithPath";
doc.Load(sFileName );
foreach (XmlNode ....... )
{
    //Need help hear how to loop and replace.
}

XDocument myDocument = XDocument.Load("path to my file");
foreach (XElement node in myDocument.Root.Descendants("placeholder"))
{
    if (node.Value.Contains("same"))
    {
        XElement newNode = new XElement("placeholder");
        newNode.Add(new XAttribute("header", node.Attribute("header").Value); // if you want to copy the current value
        newNode.Add(new XAttribute("width", "some new value"));
        node.ReplaceWith(newNode);
    }
}

XmlDocument xmlDoc = new XmlDocument();
 xmlDoc.Load("Path");
 XmlNodeList nodeList = xmlDoc.SelectNodes("section") ;

 foreach (XmlNode node in nodeList)
   {
      XmlNode childNode = node.SelectSingleNode("placeholder");
        if (childNode.Value.Contains("sam"))
          {
              childNode.Value = "sam,pam,sam2";
              childNode.Attributes["width"].Value = "4,5,91";

           }
   }

 xmlDoc.Save("Path");