//定义XMLDocument
XmlDocument xmlDocument = new XmlDocument();
//定义XML文档头文件
XmlDeclaration xmlDeclaration = xmlDocument.CreateXmlDeclaration("1.0","utf-8",null);
//增加XML文档头
xmlDocument.AppendChild(xmlDeclaration);
//定义XML的根
XmlElement xmlRoot = xmlDocument.CreateElement("userdata");
//添加根的属性
xmlRoot.SetAttribute("createuser","true");
//修改根属性的值
xmlRoot.GetAttributeNode("createuser").Value = "false";
//添加子节点并设置子节点属性
xmlDocument.AppendChild(xmlRoot);
XmlElement dataconnection = xmlDocument.CreateElement("dataconnection");
XmlElement server = xmlDocument.CreateElement("server");
server.InnerText = "localhost";
XmlElement uid = xmlDocument.CreateElement("uid");
uid.InnerText = "sa";
XmlElement pwd = xmlDocument.CreateElement("pwd");
xmlRoot.AppendChild(dataconnection);
dataconnection.AppendChild(server);
dataconnection.AppendChild(uid);
dataconnection.AppendChild(pwd);
//保存XML文档
xmlDocument.Save("book.xml");
//读取子节点server的值
XmlNode xnserver = xmlDocument.SelectSingleNode("userdata/dataconnection/server");
Console.WriteLine("node server's value is "+ xnserver.InnerText);
Console.ReadLine();
生成的XML代码如下:
<?xml version="1.0" encoding="utf-8"?>
<userdata createuser="false">
<dataConnection>
<server>localhost</server>
<uid>sa</uid>
<pwd />
</dataConnection>
</userdata>
代码
这是以前自己做过的一个测试。楼主可以参考一下。
=======================bookstore.XML内容====================
<?xml version="1.0" encoding="gb2312"?>
<bookstore>
<book>
</book>
<book>
</book>
<book genre="李赞红" ISBN="2-3631-4">
<title>CS从入门到精通</title>
<author>候捷</author>
<price>58.3</price>
</book>
<book genre="李赞红" ISBN="2-3631-4">
<title>CS从入门到精通</title>
<author>候捷</author>
<price>58.3</price>
</book>
</bookstore>
=======================读取========================
XmlDocument doc = new XmlDocument();
doc.Load(@"d:\bookstore.xml");
XmlElement root = doc.DocumentElement;
MessageBox.Show(root.SelectNodes("book")[0].InnerText);
=======================添加=========================
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(@"d:\bookstore.xml");
XmlNode root = xmlDoc.SelectSingleNode("bookstore");//查找<bookstore>
XmlElement xe1 = xmlDoc.CreateElement("book");//创建一个<book>节点
xe1.SetAttribute("genre", "李赞红");//设置该节点的genre属性
xe1.SetAttribute("ISBN", "2-3631-4");//设置该节点的ISBN属性
XmlElement xesub1 = xmlDoc.CreateElement("title");//添加一个名字为title的子节点
xesub1.InnerText = "CS从入门到精通";//设置文本
xe1.AppendChild(xesub1);//把title添加到<book>节点中
XmlElement xesub2 = xmlDoc.CreateElement("author");
xesub2.InnerText = "候捷";
xe1.AppendChild(xesub2);
XmlElement xesub3 = xmlDoc.CreateElement("price");
xesub3.InnerText = "58.3";
xe1.AppendChild(xesub3);
root.AppendChild(xe1);//把book添加到<bookstore>根节点中
xmlDoc.Save(@"d:\bookstore.xml");
======================修改========================
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(@"d:\bookstore.xml");
XmlNodeList nodeList = xmlDoc.SelectSingleNode("bookstore").ChildNodes;//获取bookstore节点的所有子节点
foreach (XmlNode xn in nodeList)//遍历所有名字为bookstore的子节点
{
XmlElement xe = (XmlElement)xn;//将子节点类型转换为XmlElement类型
if (xe.GetAttribute("genre") == "李赞红")//如果genre属性值为“李赞红”
{
xe.SetAttribute("genre", "update李赞红");//则修改该属性为“update李赞红”
XmlNodeList nls = xe.ChildNodes;//继续获取xe(xn)子节点的所有子节点
foreach (XmlNode xn1 in nls)//遍历
{
XmlElement xe2 = (XmlElement)xn1;//转换类型
if (xe2.Name == "author")//如果找到
{
xe2.InnerText = "亚胜";//则修改
break;//找到退出来
}
}
break;
}
}
xmlDoc.Save(@"d:\bookstore.xml");//保存。
========================删除=========================
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(@"d:\bookstore.xml");
XmlNodeList xnl = xmlDoc.SelectSingleNode("bookstore").ChildNodes;
foreach (XmlNode xn in xnl)
{
XmlElement xe = (XmlElement)xn;
if (xe.GetAttribute("genre") == "fantasy")
{
xe.RemoveAttribute("genre");//删除genre属性
}
else if (xe.GetAttribute("genre") == "update李赞红")
{
xe.RemoveAll();//删除该节点的全部内容
}
}
xmlDoc.Save(@"d:\bookstore.xml");
=======================bookstore.XML内容====================
<?xml version="1.0" encoding="gb2312"?>
<bookstore>
<book>
</book>
<book>
</book>
<book genre="李赞红" ISBN="2-3631-4">
<title>CS从入门到精通</title>
<author>候捷</author>
<price>58.3</price>
</book>
<book genre="李赞红" ISBN="2-3631-4">
<title>CS从入门到精通</title>
<author>候捷</author>
<price>58.3</price>
</book>
</bookstore>
=======================读取========================
XmlDocument doc = new XmlDocument();
doc.Load(@"d:\bookstore.xml");
XmlElement root = doc.DocumentElement;
MessageBox.Show(root.SelectNodes("book")[0].InnerText);
=======================添加=========================
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(@"d:\bookstore.xml");
XmlNode root = xmlDoc.SelectSingleNode("bookstore");//查找<bookstore>
XmlElement xe1 = xmlDoc.CreateElement("book");//创建一个<book>节点
xe1.SetAttribute("genre", "李赞红");//设置该节点的genre属性
xe1.SetAttribute("ISBN", "2-3631-4");//设置该节点的ISBN属性
XmlElement xesub1 = xmlDoc.CreateElement("title");//添加一个名字为title的子节点
xesub1.InnerText = "CS从入门到精通";//设置文本
xe1.AppendChild(xesub1);//把title添加到<book>节点中
XmlElement xesub2 = xmlDoc.CreateElement("author");
xesub2.InnerText = "候捷";
xe1.AppendChild(xesub2);
XmlElement xesub3 = xmlDoc.CreateElement("price");
xesub3.InnerText = "58.3";
xe1.AppendChild(xesub3);
root.AppendChild(xe1);//把book添加到<bookstore>根节点中
xmlDoc.Save(@"d:\bookstore.xml");
======================修改========================
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(@"d:\bookstore.xml");
XmlNodeList nodeList = xmlDoc.SelectSingleNode("bookstore").ChildNodes;//获取bookstore节点的所有子节点
foreach (XmlNode xn in nodeList)//遍历所有名字为bookstore的子节点
{
XmlElement xe = (XmlElement)xn;//将子节点类型转换为XmlElement类型
if (xe.GetAttribute("genre") == "李赞红")//如果genre属性值为“李赞红”
{
xe.SetAttribute("genre", "update李赞红");//则修改该属性为“update李赞红”
XmlNodeList nls = xe.ChildNodes;//继续获取xe(xn)子节点的所有子节点
foreach (XmlNode xn1 in nls)//遍历
{
XmlElement xe2 = (XmlElement)xn1;//转换类型
if (xe2.Name == "author")//如果找到
{
xe2.InnerText = "亚胜";//则修改
break;//找到退出来
}
}
break;
}
}
xmlDoc.Save(@"d:\bookstore.xml");//保存。
========================删除=========================
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(@"d:\bookstore.xml");
XmlNodeList xnl = xmlDoc.SelectSingleNode("bookstore").ChildNodes;
foreach (XmlNode xn in xnl)
{
XmlElement xe = (XmlElement)xn;
if (xe.GetAttribute("genre") == "fantasy")
{
xe.RemoveAttribute("genre");//删除genre属性
}
else if (xe.GetAttribute("genre") == "update李赞红")
{
xe.RemoveAll();//删除该节点的全部内容
}
}
xmlDoc.Save(@"d:\bookstore.xml");