<%@ Page Language="C#" %>
<%@ Import Namespace="System.Xml" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
private string file = HttpContext.Current.Server.MapPath("bookstore.xml");
private XmlDocument doc = new XmlDocument();
private StringBuilder sb = new StringBuilder();
public void Page_Load(Object sender, EventArgs e)
{
if (!IsPostBack)
ReadXml();
}
//显示所有数据
private void ReadXml()
doc.Load(file);
XmlNodeList nodeList = doc.SelectSingleNode("bookstore").ChildNodes;
foreach (XmlNode node in nodeList)
XmlElement element = (XmlElement)node;
sb.Append(element.GetAttribute("genre") + "<br />"); //显示属性值
sb.Append(element.GetAttribute("ISBN") + "<br />");
XmlNodeList nextNodeList = element.ChildNodes;
foreach (XmlNode nextNode in nextNodeList)
sb.Append(nextNode.InnerText + "<br />"); //显示子节点文本
ltXml.Text = sb.ToString();
//增加
protected void btnAdd_Click(object sender, EventArgs e)
XmlNode node = doc.SelectSingleNode("bookstore"); //查找<bookstore>节点
XmlElement element = doc.CreateElement("book"); //创建一个<book>节点
element.SetAttribute("genre", "Text"); //设置该节点genre属性
element.SetAttribute("ISBN", "7-8-98"); //设置该节点ISBN属性
XmlElement titleElement = doc.CreateElement("title");
titleElement.InnerText = "TextTitle"; //设置文本
element.AppendChild(titleElement);
XmlElement authorElement = doc.CreateElement("author");
authorElement.InnerText = "TextAuthor";
element.AppendChild(authorElement);
XmlElement priceElement = doc.CreateElement("price");
priceElement.InnerText = "9.22";
element.AppendChild(priceElement);
node.AppendChild(element); //添加到<bookstore>节点中
doc.Save(file);
//修改
protected void btnUpdate_Click(object sender, EventArgs e)
foreach(XmlNode node in nodeList)
XmlElement element = (XmlElement)node; //将子节点类型转换为XmlElement类型
if (element.GetAttribute("genre") == "Text") //如果genre属性值为“Text”
element.SetAttribute("genre", "updateText"); //则修改该属性为“updateText”
XmlNodeList nextNodeList = element.ChildNodes; //继续获取element子节点的所有子节点
if (nextNode.Name == "author")
nextNode.InnerText = "亚胜";
break;
//删除
protected void btnDelete_Click(object sender, EventArgs e)
if (element.GetAttribute("genre") == "fantasy")
element.RemoveAttribute("genre"); //按名称移除属性
else if (element.GetAttribute("genre") == "updateText")
element.RemoveAll(); //移除所有属性和子级
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Xml增删改查</title>
</head>
<body>
<form runat="server">
<div>
<asp:Literal ID="ltXml" runat="server"></asp:Literal><br />
<asp:Button ID="btnAdd" runat="server" Text="AddXml" onclick="btnAdd_Click" />
<asp:Button ID="btnUpdate" runat="server" Text="UpdateXml" onclick="btnUpdate_Click" />
<asp:Button ID="btnDelete" runat="server" Text="DeleteXml" onclick="btnDelete_Click" />
</div>
</form>
</body>
</html>
bookstore.xml的内容如下：
<?xml version="1.0" encoding="utf-8"?>
<bookstore>
<book genre="fantasy" ISBN="2-3631-4">
<title>Oberon's Legacy</title>
<author>Corets, Eva</author>
<price>5.95</price>
</book>
</bookstore>
