C# 生成 增添 修改 删除 XML节点操作
C# 生成 添加 修改 删除 XML节点操作
XmlDocument xmldoc;
XmlNode xmlnode;
XmlElement xmlelem;
protected void Page_Load(object sender, EventArgs e)
{
//创建文件和添加节点
xmldoc = new XmlDocument();
//加入XML的声明段落,<?xml version="1.0" encoding="gb2312"?>
XmlDeclaration xmldecl;
xmldecl = xmldoc.CreateXmlDeclaration("1.0", "gb2312", null);
xmldoc.AppendChild(xmldecl);
//加入一个根元素
xmlelem = xmldoc.CreateElement("", "Employees", "");
xmldoc.AppendChild(xmlelem);
//加入另外一个元素
for (int i = 1; i < 3; i++)
{
XmlNode root = xmldoc.SelectSingleNode("Employees");//查找<Employees>
XmlElement xe1 = xmldoc.CreateElement("Node");//创建一个<Node>节点
xe1.SetAttribute("genre", "李赞红");//设置该节点genre属性
xe1.SetAttribute("ISBN", "2-3631-4");//设置该节点ISBN属性
XmlElement xesub1 = xmldoc.CreateElement("title");
xesub1.InnerText = "CS从入门到精通";//设置文本节点
xe1.AppendChild(xesub1);//添加到<Node>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);//添加到<Employees>节点中
}
//保存创建好的XML文档
xmldoc.Save(Server.MapPath("data.xml"));
//添加节点
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("data.xml"));
XmlNode roots = xmlDoc.SelectSingleNode("Employees");//查找<Employees>
XmlElement xe2 = xmlDoc.CreateElement("Node");//创建一个<Node>节点
xe2.SetAttribute("genre", "张三");//设置该节点genre属性
xe2.SetAttribute("ISBN", "1-1111-1");//设置该节点ISBN属性
XmlElement xesub6 = xmlDoc.CreateElement("title");
xesub6.InnerText = "C#入门帮助";//设置文本节点
xe2.AppendChild(xesub6);//添加到<Node>节点中
XmlElement xesub4 = xmlDoc.CreateElement("author");
xesub4.InnerText = "高手";
xe2.AppendChild(xesub4);
XmlElement xesub5 = xmlDoc.CreateElement("price");
xesub5.InnerText = "158.3";
xe2.AppendChild(xesub5);
roots.AppendChild(xe2);//添加到<Employees>节点中
xmlDoc.Save(Server.MapPath("data.xml"));
//修改节点属性和内容
xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("data.xml"));
XmlNodeList nodeList = xmlDoc.SelectSingleNode("Employees").ChildNodes;//获取Employees节点的所有子节点
foreach (XmlNode xn in nodeList)//遍历所有子节点
{
XmlElement xe = (XmlElement)xn;//将子节点类型转换为XmlElement类型
if (xe.GetAttribute("genre") == "张三")//如果genre属性值为“张三”
{
xe.SetAttribute("genre", "update张三");//则修改该属性为“update张三”
XmlNodeList nls = xe.ChildNodes;//继续获取xe子节点的所有子节点
foreach (XmlNode xn1 in nls)//遍历
{
xe2 = (XmlElement)xn1;//转换类型
if (xe2.Name == "author")//如果找到
{
xe2.InnerText = "亚胜";//则修改
}
}
}
}
xmlDoc.Save(Server.MapPath("data.xml"));//保存。
//添加节点
xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("data.xml"));
nodeList = xmlDoc.SelectSingleNode("Employees").ChildNodes;//获取Employees节点的所有子节点
foreach (XmlNode xn in nodeList)
{
XmlElement xe = (XmlElement)xn;
xe.SetAttribute("test", "111111");
XmlElement xesub = xmlDoc.CreateElement("flag");
xesub.InnerText = "1";
xe.AppendChild(xesub);
}
xmlDoc.Save(Server.MapPath("data.xml"));
//删除属性和子节点
xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("data.xml"));
XmlNodeList xnl = xmlDoc.SelectSingleNode("Employees").ChildNodes;
foreach (XmlNode xn in xnl)
{
XmlElement xe = (XmlElement)xn;
xe.RemoveAttribute("genre");//删除genre属性
XmlNodeList nls = xe.ChildNodes;//继续获取xe子节点的所有子节点
foreach (XmlNode xn1 in nls)//遍历
{
xe2 = (XmlElement)xn1;//转换类型
if (xe2.Name == "flag")//如果找到
{
xe.RemoveChild(xe2);//则删除
}
}
}
xmlDoc.Save(Server.MapPath("data.xml"));
//删除节点
xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("data.xml"));
XmlNode rootq = xmlDoc.SelectSingleNode("Employees");
xnl = xmlDoc.SelectSingleNode("Employees").ChildNodes;
for (int i = 0; i < xnl.Count; i++)
{
XmlElement xe = (XmlElement)xnl.Item(i);
if (xe.GetAttribute("ISBN") == "1-1111-10")
{
rootq.RemoveChild(xe);
if (i < xnl.Count) i = i - 1;
}
}
xmlDoc.Save(Server.MapPath("data.xml"));
//读取节点
XmlDocument doc = new XmlDocument();
doc.Load(Server.MapPath("data.xml"));
//根据属性查找节点
//XmlNode xns = doc.SelectSingleNode("/Employees/Node[@ISBN='2-3631-4']");
//根据子节点内容
XmlNode xns = doc.SelectSingleNode("Employees/Node/author[text()='候捷']");
//根据多层节点查找
//objNode = objDoc.SelectSingleNode("Company/Department[Employees/Employee/@id='22345']/Department_Name")
xnl = xns.ChildNodes;
foreach (XmlNode xnf in xnl)
{
// XmlElement xe = (XmlElement)xnf;
//Response.Write(xe.GetAttribute("ISBN"));//显示属性值
// XmlNodeList xnf1 = xe.ChildNodes;
// foreach (XmlNode xn2 in xnf1)
// {
Response.Write(xnf.Name + ":" + xnf.InnerText);//显示子节点点文本
//}
Response.Write("<br>");
}
//XmlNode objNode = doc.SelectSingleNode("Employees/Node[ISBN='2-3631-4']");
}
XmlDocument xmldoc;
XmlNode xmlnode;
XmlElement xmlelem;
protected void Page_Load(object sender, EventArgs e)
{
//创建文件和添加节点
xmldoc = new XmlDocument();
//加入XML的声明段落,<?xml version="1.0" encoding="gb2312"?>
XmlDeclaration xmldecl;
xmldecl = xmldoc.CreateXmlDeclaration("1.0", "gb2312", null);
xmldoc.AppendChild(xmldecl);
//加入一个根元素
xmlelem = xmldoc.CreateElement("", "Employees", "");
xmldoc.AppendChild(xmlelem);
//加入另外一个元素
for (int i = 1; i < 3; i++)
{
XmlNode root = xmldoc.SelectSingleNode("Employees");//查找<Employees>
XmlElement xe1 = xmldoc.CreateElement("Node");//创建一个<Node>节点
xe1.SetAttribute("genre", "李赞红");//设置该节点genre属性
xe1.SetAttribute("ISBN", "2-3631-4");//设置该节点ISBN属性
XmlElement xesub1 = xmldoc.CreateElement("title");
xesub1.InnerText = "CS从入门到精通";//设置文本节点
xe1.AppendChild(xesub1);//添加到<Node>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);//添加到<Employees>节点中
}
//保存创建好的XML文档
xmldoc.Save(Server.MapPath("data.xml"));
//添加节点
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("data.xml"));
XmlNode roots = xmlDoc.SelectSingleNode("Employees");//查找<Employees>
XmlElement xe2 = xmlDoc.CreateElement("Node");//创建一个<Node>节点
xe2.SetAttribute("genre", "张三");//设置该节点genre属性
xe2.SetAttribute("ISBN", "1-1111-1");//设置该节点ISBN属性
XmlElement xesub6 = xmlDoc.CreateElement("title");
xesub6.InnerText = "C#入门帮助";//设置文本节点
xe2.AppendChild(xesub6);//添加到<Node>节点中
XmlElement xesub4 = xmlDoc.CreateElement("author");
xesub4.InnerText = "高手";
xe2.AppendChild(xesub4);
XmlElement xesub5 = xmlDoc.CreateElement("price");
xesub5.InnerText = "158.3";
xe2.AppendChild(xesub5);
roots.AppendChild(xe2);//添加到<Employees>节点中
xmlDoc.Save(Server.MapPath("data.xml"));
//修改节点属性和内容
xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("data.xml"));
XmlNodeList nodeList = xmlDoc.SelectSingleNode("Employees").ChildNodes;//获取Employees节点的所有子节点
foreach (XmlNode xn in nodeList)//遍历所有子节点
{
XmlElement xe = (XmlElement)xn;//将子节点类型转换为XmlElement类型
if (xe.GetAttribute("genre") == "张三")//如果genre属性值为“张三”
{
xe.SetAttribute("genre", "update张三");//则修改该属性为“update张三”
XmlNodeList nls = xe.ChildNodes;//继续获取xe子节点的所有子节点
foreach (XmlNode xn1 in nls)//遍历
{
xe2 = (XmlElement)xn1;//转换类型
if (xe2.Name == "author")//如果找到
{
xe2.InnerText = "亚胜";//则修改
}
}
}
}
xmlDoc.Save(Server.MapPath("data.xml"));//保存。
//添加节点
xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("data.xml"));
nodeList = xmlDoc.SelectSingleNode("Employees").ChildNodes;//获取Employees节点的所有子节点
foreach (XmlNode xn in nodeList)
{
XmlElement xe = (XmlElement)xn;
xe.SetAttribute("test", "111111");
XmlElement xesub = xmlDoc.CreateElement("flag");
xesub.InnerText = "1";
xe.AppendChild(xesub);
}
xmlDoc.Save(Server.MapPath("data.xml"));
//删除属性和子节点
xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("data.xml"));
XmlNodeList xnl = xmlDoc.SelectSingleNode("Employees").ChildNodes;
foreach (XmlNode xn in xnl)
{
XmlElement xe = (XmlElement)xn;
xe.RemoveAttribute("genre");//删除genre属性
XmlNodeList nls = xe.ChildNodes;//继续获取xe子节点的所有子节点
foreach (XmlNode xn1 in nls)//遍历
{
xe2 = (XmlElement)xn1;//转换类型
if (xe2.Name == "flag")//如果找到
{
xe.RemoveChild(xe2);//则删除
}
}
}
xmlDoc.Save(Server.MapPath("data.xml"));
//删除节点
xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("data.xml"));
XmlNode rootq = xmlDoc.SelectSingleNode("Employees");
xnl = xmlDoc.SelectSingleNode("Employees").ChildNodes;
for (int i = 0; i < xnl.Count; i++)
{
XmlElement xe = (XmlElement)xnl.Item(i);
if (xe.GetAttribute("ISBN") == "1-1111-10")
{
rootq.RemoveChild(xe);
if (i < xnl.Count) i = i - 1;
}
}
xmlDoc.Save(Server.MapPath("data.xml"));
//读取节点
XmlDocument doc = new XmlDocument();
doc.Load(Server.MapPath("data.xml"));
//根据属性查找节点
//XmlNode xns = doc.SelectSingleNode("/Employees/Node[@ISBN='2-3631-4']");
//根据子节点内容
XmlNode xns = doc.SelectSingleNode("Employees/Node/author[text()='候捷']");
//根据多层节点查找
//objNode = objDoc.SelectSingleNode("Company/Department[Employees/Employee/@id='22345']/Department_Name")
xnl = xns.ChildNodes;
foreach (XmlNode xnf in xnl)
{
// XmlElement xe = (XmlElement)xnf;
//Response.Write(xe.GetAttribute("ISBN"));//显示属性值
// XmlNodeList xnf1 = xe.ChildNodes;
// foreach (XmlNode xn2 in xnf1)
// {
Response.Write(xnf.Name + ":" + xnf.InnerText);//显示子节点点文本
//}
Response.Write("<br>");
}
//XmlNode objNode = doc.SelectSingleNode("Employees/Node[ISBN='2-3631-4']");
}