XML简单读写

最新推荐文章于 2025-07-09 09:23:06 发布

原创最新推荐文章于 2025-07-09 09:23:06 发布 · 837 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#xml #attributes #null #string

.Net 同时被 3 个专栏收录

124 篇文章

订阅专栏

VS2008

61 篇文章

订阅专栏

VS2005

56 篇文章

订阅专栏

本文介绍如何使用XML进行文档操作，包括获取特定节点如书籍标题、添加新的书籍记录、以及通过属性进行查找等实用技巧。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

- <bookstore>
- <book genre="autobiography" publicationdate="1991" ISBN="1-861003-11-0">
<title>The Autobiography of Benjamin Franklin</title>
- <author>
<first-name>Benjamin</first-name>
<last-name>Franklin</last-name>
</author>
<price>8.99</price>
</book>
- <book genre="novel" publicationdate="1967" ISBN="0-201-63361-2">
<title>The Confidence Man</title>
- <author>
<first-name>Herman</first-name>
<last-name>Melville</last-name>
</author>
<price>11.99</price>
</book>
- <book genre="philosophy" publicationdate="1991" ISBN="1-861001-57-6">
<title>The Gorgias</title>
- <author>
<name>Plato</name>
</author>
<price>9.99</price>
</book>
</bookstore>

doc.Load("..//books.xml");
1)得到节点<title>清单！
//get only the nodes that we want.
XmlNodeList nodeLst=doc.GetElementsByTagName("title");
也可以
XmlNodeList nodeLst=doc.SelectNodes("/bookstore/book/title");

      //iterate through the XmlNodeList
      foreach(XmlNode node in nodeLst)
        listBox1.Items.Add(node.InnerText);

2）增加节点
    //create the declaration section
      XmlDeclaration newDec=doc.CreateXmlDeclaration("1.0",null,null);
      doc.AppendChild(newDec);
      //create the new root element
      XmlElement newRoot=doc.CreateElement("newBookstore");
      doc.AppendChild(newRoot);
   XmlElement newBook=doc.CreateElement("book");
      //set some attributes
      newBook.SetAttribute("genre","Mystery");
      newBook.SetAttribute("publicationdate","2001");
      newBook.SetAttribute("ISBN","123456789");
      //create a new 'title' element
      XmlElement newTitle=doc.CreateElement("title");
      newTitle.InnerText="Case of the Missing Cookie";
      newBook.AppendChild(newTitle);
      doc.DocumentElement.AppendChild(newBook);

3）查找

string srch="Bookstore/book[title='" + listBox1.SelectedItem.ToString() + "']";
      XmlNode foundNode=doc.SelectSingleNode(srch);
      if(foundNode!=null)
        MessageBox.Show(foundNode.InnerText);
      else
        MessageBox.Show("Not found");

==================

根据属性查找:

XmlNode nodeQ = xmlDoc.SelectSingleNode("/BookStore");
XmlNode node = nodeQ.SelectSingleNode("book[@publicationdate='" + sName + "']");

点到其它节点value:

sISBN = node.Attributes["ISBN"].Value