using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.IO;
using System.Xml;
namespace test
{
public partial class xmlDemo : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
//使用XmlDocument创建xml文件
protected void Button1_Click(object sender, EventArgs e)
{
string dirPath = Server.MapPath("/xml");
DirectoryInfo dir = new DirectoryInfo(dirPath);
if (!dir.Exists)
{
dir.Create();
}
//创建xml文件
XmlDocument xdoc = new XmlDocument();
//创建xml描述
XmlDeclaration xdec = xdoc.CreateXmlDeclaration("1.0", "utf-8", null);
xdoc.AppendChild(xdec);
//创建xml跟节点
XmlElement xroot = xdoc.CreateElement("persons");
xdoc.AppendChild(xroot);
//创建节点
XmlElement xper = xdoc.CreateElement("person");
xroot.AppendChild(xper);
//对person节点设置属性
xper.SetAttribute("id", "");
//创建person节点下的子节点
//person节点下创建name节点
XmlElement xname = xdoc.CreateElement("name");
xper.AppendChild(xname);
XmlText textName = xdoc.CreateTextNode("test");
xname.AppendChild(textName);
//person节点下创建age节点
XmlElement xage = xdoc.CreateElement("age");
xper.AppendChild(xage);
XmlText textAge = xdoc.CreateTextNode("");
xage.AppendChild(textAge);
//person节点下创建sex节点
XmlElement xsex = xdoc.CreateElement("sex");
xper.AppendChild(xsex);
XmlText textsex = xdoc.CreateTextNode("男");
xsex.AppendChild(textsex);
//保存xml文件
xdoc.Save(dirPath+"/"+"person.xml");
Response.Write("创建xml文件成功");
}
//使用linq to xml创建xml文件
protected void Button2_Click(object sender, EventArgs e)
{
string dirPath = Server.MapPath("/xml");
DirectoryInfo dir = new DirectoryInfo(dirPath);
if (!dir.Exists)
{
dir.Create();
}
XDocument xdoc = new XDocument();
//使用XDocument 可以不需要document描述
//创建跟节点
XElement root = new XElement("root");
//添加跟节点
xdoc.Add(root);
//创建person节点
XElement per = new XElement("person");
//添加person节点
root.Add(per);
//创建属性节点
XAttribute xId = new XAttribute("id", "");
//name节点
XElement name = new XElement("name", "test");
//age节点
XElement age = new XElement("age", "");
//sex节点
XElement sex = new XElement("sex", "男");
//对person节点添加id属性 以及name sex age节点
per.Add(xId,name, sex, age);
//保存linq to xml 文件
xdoc.Save(dirPath + "/" + "linqToXml.xml");
Response.Write("linq to xml保存文件成功");
}
//使用linq to xml 批量添加person节点
//xDocument.Root.Add() 批量添加
protected void Button3_Click(object sender, EventArgs e)
{
string dirPath = Server.MapPath("/xml");
DirectoryInfo dir = new DirectoryInfo(dirPath);
if (!dir.Exists)
{
dir.Create();
}
XDocument xdoc = new XDocument();
//使用XDocument 可以不需要document描述
//创建跟节点
XElement root = new XElement("root");
xdoc.Add(root);
Random r = new Random();
for (int i = ; i <= ;i++ )
{
//person节点
XElement per = new XElement("person");
//id属性
XAttribute xId = new XAttribute("id", i);
//name
XElement name = new XElement("name","test"+i);
//age
XElement age = new XElement("age",r.Next(,));
//sex
XElement sex = new XElement("sex", "男女"[r.Next()]);
per.Add(xId, name, sex, age);
xdoc.Root.Add(per);
}
//保存linq to xml 文件
xdoc.Save(dirPath + "/" + "personList.xml");
Response.Write("linq to xml批量添加成功");
}
//linq to xml 查找节点
protected void Button5_Click(object sender, EventArgs e)
{
string path = Server.MapPath("/xml/personList.xml");
XDocument xdoc = XDocument.Load(path);
var query = xdoc.DescendantNodes().Where(
el => {
//将el转为XElement对象
XElement xe = el as XElement;
if (xe == null)
{
return false;
}
//找到age节点
XElement xAge = xe.Element("age");
//找到sex节点
XElement xSex = xe.Element("sex");
if(xAge !=null && xSex !=null)
{
int age = Convert.ToInt32(xAge.Value);
string sex = xSex.Value;
if (age >= && age <= && sex == "女")
{
return true;
}
}
return false;
}
);
//将查到的节点保存到xml文件中
string savePath = Server.MapPath("/xml/search.xml");
XDocument saveXdoc = new XDocument();
XElement root = new XElement("root");
saveXdoc.Add(root);
root.Add(query);
saveXdoc.Save(savePath);
Response.Write("linq to xml查找成功");
}
//linq to xml 修改节点
protected void Button4_Click(object sender, EventArgs e)
{
string path = Server.MapPath("/xml/personList.xml");
XDocument xdoc = XDocument.Load(path);
var query = from p in xdoc.Descendants("person")
where Convert.ToInt32(p.Attribute("id").Value) ==
select p;
var first = query.FirstOrDefault();
if (first != null)
{
XElement searchElement = first as XElement;
XElement xname = searchElement.Element("name");
xname.Value = "刘德华";
xdoc.Save(path);
Response.Write("linq to xml修改成功");
}
}
//linq to xml 添加节点
protected void Button6_Click(object sender, EventArgs e)
{
string path = Server.MapPath("/xml/personList.xml");
XDocument xdoc = XDocument.Load(path);
//找到根节点
XElement root = xdoc.Element("root");
XElement xPer = new XElement("person");
XAttribute xid = new XAttribute("id", "");
XElement xName = new XElement("name","张学友");
XElement xSex = new XElement("sex","男");
XElement xAge = new XElement("age","");
root.Add(xPer);
xPer.Add(xPer, xid, xName, xAge, xSex);
xdoc.Save(path);
Response.Write("添加成功");
}
//linq to xml 删除节点
protected void Button7_Click(object sender, EventArgs e)
{
string path = Server.MapPath("/xml/personList.xml");
XDocument xdoc = XDocument.Load(path);
var query = from p in xdoc.Descendants("person")
where Convert.ToInt32(p.Attribute("id").Value) ==
select p;
var first = query.FirstOrDefault();
if (first != null)
{
XElement searchElement = first as XElement;
searchElement.Remove();
xdoc.Save(path);
Response.Write("linq to xml删除成功");
}
}
}
}
