如何从文件中删除xml元素
本文关键字:删除 xml 元素 文件 | 更新日期: 2023-09-27 18:16:44
在XML文件中,例如:
<Snippets>
<Snippet name="abc">
<SnippetCode>
code goes here
</SnippetCode>
</Snippet>
<Snippet name="def">
<SnippetCode>
code goes here
</SnippetCode>
</Snippet>
</Snippets>
当只给定一个元素的属性名称(如abc
或def
(时,如何删除该元素?
你可以试试这样的东西:
string xmlInput = @"<Snippets>
<Snippet name=""abc"">
<SnippetCode>
code goes here
</SnippetCode>
</Snippet>
<Snippet name=""def"">
<SnippetCode>
code goes here
</SnippetCode>
</Snippet>
</Snippets>";
// create the XML, load the contents
XmlDocument doc = new XmlDocument();
doc.LoadXml(xmlInput);
// find a node - here the one with name='abc'
XmlNode node = doc.SelectSingleNode("/Snippets/Snippet[@name='abc']");
// if found....
if (node != null)
{
// get its parent node
XmlNode parent = node.ParentNode;
// remove the child node
parent.RemoveChild(node);
// verify the new XML structure
string newXML = doc.OuterXml;
// save to file or whatever....
doc.Save(@"C:'temp'new.xml");
}
如果您能够使用LINQ to XML,那么它确实非常简单:
var doc = XDocument.Load("input.xml");
var query = doc.Descendants("Snippet")
.Where(x => (string) x.Attribute("name") == "def");
// Using extension method
query.Remove();
(这个问题被标记为.NET 2.0,但在2022年,假设大多数用户可以使用LINQ to XML似乎是合理的…(
XDocument doc = XDocument.Load("input.xml");
var q = from node in doc.Descendants("Snippet")
let attr = node.Attribute("name")
where attr != null && attr.Value == "abc"
select node;
q.ToList().ForEach(x => x.Remove());
doc.Save("output.xml");
.Net 2.0
XmlDocument doc = new XmlDocument();
doc.Load("input.xml");
XmlNodeList nodes = doc.SelectNodes("//Snippet[@name='abc']");
现在您有了属性名称为'abc'的节点,您现在可以循环通过它并删除
XElement xEmp = XElement.Load(@"C://Users//Khulu//Documents//Visual Studio 2012//Projects//AMD//Schedule//ToDo.xml");
//
xEmp.Add(
new XElement("ToDo",
new XElement("Item", item),
new XElement("date", date),
new XElement("time", time),
new XElement("due", due),
new XElement("description", description))
);
xEmp.Save(@"C://Users//Khulu//Documents//Visual Studio 2012//Projects//AMD//Schedule//ToDo.xml");` XElement xEmp = XElement.Load(@"C://Users//Khulu//Documents//Visual Studio 2012//Projects//AMD//Schedule//ToDo.xml");
//
xEmp.Add(
new XElement("ToDo",
new XElement("Item", item),
new XElement("date", date),
new XElement("time", time),
new XElement("due", due),
new XElement("description", description))
);
xEmp.Save(@"C://Users//Khulu//Documents//Visual Studio 2012//Projects//AMD//Schedule//ToDo.xml");`