-- 作者：private_man
-- 发布时间：6/23/2007 10:59:00 AM
-- 用VS2005 编写的DOM.(append.insert.replace.remove)
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml; public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
XmlDocument document = new XmlDocument();
AddElement(document);
RepalceElement(document);
RepalceAttrbute(document);
InsertElement(document);
RemoveElement(document);
} private void AddElement(XmlDocument document) //添加元素
{
XmlDeclaration declaration = document.CreateXmlDeclaration("1.0", "gb2312", "yes");
document.AppendChild(declaration);
XmlElement bookselement = document.CreateElement("books");
document.AppendChild(bookselement);
XmlElement bkelement = document.CreateElement("book");
bookselement.AppendChild(bkelement);
XmlElement nameelement = document.CreateElement("name");
nameelement.InnerText = "java";
bkelement.AppendChild(nameelement);
XmlElement priceelement = document.CreateElement("price");
priceelement.InnerText = "120";
bkelement.AppendChild(priceelement);
XmlElement authorelement = document.CreateElement("author");
authorelement.SetAttribute("id", "1");
authorelement.InnerText = "welinmus";
bkelement.AppendChild(authorelement);
bkelement = document.CreateElement("book");
bookselement.AppendChild(bkelement);
nameelement = document.CreateElement("name");
nameelement.InnerText = "XML";
bkelement.AppendChild(nameelement);
priceelement = document.CreateElement("price");
priceelement.InnerText = "100";
bkelement.AppendChild(priceelement);
authorelement = document.CreateElement("author");
authorelement.SetAttribute("id", "2");
authorelement.InnerText = "Lobinshion";
bkelement.AppendChild(authorelement);
bkelement = document.CreateElement("book");
bookselement.AppendChild(bkelement);
nameelement = document.CreateElement("name");
nameelement.InnerText = "SQLServer";
bkelement.AppendChild(nameelement);
priceelement = document.CreateElement("price");
priceelement.InnerText = "110";
bkelement.AppendChild(priceelement);
authorelement = document.CreateElement("author");
authorelement.SetAttribute("id", "3");
authorelement.InnerText = "John.Smith";
bkelement.AppendChild(authorelement); document.Save(Server.MapPath("books.xml"));
}
private void RepalceElement(XmlDocument document) //替换文本节点
{
document.Load(Server.MapPath("books.xml"));
XmlNodeList nodelist=document.GetElementsByTagName("*");
XmlElement element;
for (int i = 0; i < nodelist.Count; i++)
{
element =(XmlElement) nodelist[i]; if (element.Name == "name")
{
if (element.ChildNodes[0].Value == "java")
{
element.InnerText ="jsp";
break;
}
}
} document.Save(Server.MapPath("books.xml"));
}
private void RepalceAttrbute(XmlDocument document) //替换属性节点
{
document.Load(Server.MapPath("books.xml"));
XmlNodeList nodelist = document.GetElementsByTagName("*");
XmlElement element; for (int i = 0; i < nodelist.Count; i++)
{
element = (XmlElement)nodelist[i]; if (element.GetAttribute("id") == "1")
{
element.SetAttribute("id", "5");
break;
}
} document.Save(Server.MapPath("books.xml"));
}
private void InsertElement(XmlDocument document) //插入元素
{
document.Load(Server.MapPath("books.xml"));
XmlNodeList nodelist = document.GetElementsByTagName("*");
XmlElement element;
XmlElement pageelement=document.CreateElement("page");
pageelement.InnerText="350页"; for (int i = 0; i < nodelist.Count; i++)
{
element = (XmlElement)nodelist[i]; if (element.Name == "book")
{
if (element.ChildNodes[0].InnerText=="XML")
{
element.InsertAfter(pageelement, element.FirstChild);
break;
}
}
}
document.Save(Server.MapPath("books.xml"));
} private void RemoveElement(XmlDocument document) //删除元素
{
document.Load(Server.MapPath("books.xml"));
XmlNodeList nodelist = document.GetElementsByTagName("*");
XmlElement element;
for (int i = 0; i < nodelist.Count; i++)
{
element = (XmlElement)nodelist[i];
if (element.Name=="book")
{
if (element.ChildNodes[0].InnerText=="XML")
element.RemoveChild(element.ChildNodes[1]);
}
} document.Save(Server.MapPath("books.xml"));
}
}
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