已知有一个XML文件(bookstore.xml)如下:
<?
xml version="1.0" encoding="gb2312"
?>
<
bookstore
>
<
book
genre
="fantasy"
ISBN
="2-3631-4"
>
<
title
>
Oberon's Legacy
</
title
>
<
author
>
Corets, Eva
</
author
>
<
price
>
5.95
</
price
>
</
book
>
</
bookstore
>
操作
1、往<bookstore>节点中插入一个<book>节点
XmlDocument xmlDoc
=
new
XmlDocument();
xmlDoc.Load(
"
bookstore.xml
"
);
//
xmlDoc.LoadXml("<!--l version=\"1.0\" encoding=\"gb2312\--><BOOKSTORE></BOOKSTORE>");
XmlNode root
=
xmlDoc.SelectSingleNode(
"
bookstore
"
);
//
查找<BOOKSTORE></BOOKSTORE>
XmlElement xe1
=
xmlDoc.CreateElement(
"
book
"
);
//
创建一个<BOOK></BOOK>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<BOOK></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);
//
添加到<BOOKSTORE></BOOKSTORE>节点中
xmlDoc.Save(
"
bookstore.xml
"
);
结果为:
<?
xml version="1.0" encoding="gb2312"
?>
<
bookstore
>
<
book
genre
="fantasy"
ISBN
="2-3631-4"
>
<
title
>
Oberon's Legacy
</
title
>
<
author
>
Corets, Eva
</
author
>
<
price
>
5.95
</
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
>
2.修改节点:将genre属性值为“李赞红“的节点的genre值改为“update李赞红”,将该节点的子节点<author>的文本修改为“亚胜”。
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
;
//
找到退出来就可以了
}
}
break
;
}
}
xmlDoc.Save(
"
bookstore.xml
"
);
//
保存。
结果:
<?
xml version="1.0" encoding="gb2312"
?>
<
bookstore
>
<
book
genre
="fantasy"
ISBN
="2-3631-4"
>
<
title
>
Oberon's Legacy
</
title
>
<
author
>
Corets, Eva
</
author
>
<
price
>
5.95
</
price
>
</
book
>
<
book
genre
="update李赞红"
ISBN
="2-3631-4"
>
<
title
>
CS从入门到精通
</
title
>
<
author
>
亚胜
</
author
>
<
price
>
58.3
</
price
>
</
book
>
</
bookstore
>
3、删除 <book genre="fantasy" ISBN="2-3631-4">节点的genre属性,删除 <book genre="update李赞红" ISBN="2-3631-4">节点。
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(
"
bookstore.xml
"
);
结果
<?
xml version="1.0" encoding="gb2312"
?>
<
bookstore
>
<
book
ISBN
="2-3631-4"
>
<
title
>
Oberon's Legacy
</
title
>
<
author
>
Corets, Eva
</
author
>
<
price
>
5.95
</
price
>
</
book
>
<
book
>
</
book
>
</
bookstore
>
4、显示所有数据。
XmlNode xn
=
xmlDoc.SelectSingleNode(
"
bookstore
"
);
XmlNodeList xnl
=
xn.ChildNodes;
foreach
(XmlNode xnf
in
xnl)
{
XmlElement xe
=
(XmlElement)xnf;
Console.WriteLine(xe.GetAttribute(
"
genre
"
));
//
显示属性值
Console.WriteLine(xe.GetAttribute(
"
ISBN
"
));
XmlNodeList xnf1
=
xe.ChildNodes;
foreach
(XmlNode xn2
in
xnf1)
{
Console.WriteLine(xn2.InnerText);
//
显示子节点点文本
}
}
参考资料来源:
http://www.blogjava.net/ebecket/archive/2010/03/22/316134.html
常用到的一些操作:
- XmlDocument xmlDoc = new XmlDocument();
- xmlDoc.Load("bookstore.xml");
-
- XmlNode root = xmlDoc.SelectSingleNode("bookstore");
- XmlElement xe1 = xmlDoc.CreateElement("book");
- xe1.SetAttribute("genre", "李赞红");
- xe1.SetAttribute("ISBN", "2-3631-4");
-
- XmlElement xesub1 = xmlDoc.CreateElement("title");
- xesub1.InnerText = "CS从入门到精通";
- xe1.AppendChild(xesub1);
- 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);
- xmlDoc.Save("bookstore.xml");
XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load("bookstore.xml"); //xmlDoc.LoadXml(""); XmlNode root = xmlDoc.SelectSingleNode("bookstore");//查找 XmlElement xe1 = xmlDoc.CreateElement("book");//创建一个节点 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);//添加到节点中 xmlDoc.Save("bookstore.xml");
已知有一个XML文件(bookstore.xml)如下:
<?xml version="1.0" encoding="gb2312"?>
<bookstore>
<book genre="fantasy" ISBN="2-3631-4">
<title>Oberon's Legacy</title>
<author>Corets, Eva</author>
<price>5.95</price>
</book>
</bookstore>
1、往<bookstore>节点中插入一个<book>节点:
- XmlDocument xmlDoc = new XmlDocument();
- xmlDoc.Load("bookstore.xml");
-
- XmlNode root = xmlDoc.SelectSingleNode("bookstore");
- XmlElement xe1 = xmlDoc.CreateElement("book");
- xe1.SetAttribute("genre", "李赞红");
- xe1.SetAttribute("ISBN", "2-3631-4");
-
- XmlElement xesub1 = xmlDoc.CreateElement("title");
- xesub1.InnerText = "CS从入门到精通";
- xe1.AppendChild(xesub1);
- 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);
- xmlDoc.Save("bookstore.xml");
XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load("bookstore.xml"); //xmlDoc.LoadXml(""); XmlNode root = xmlDoc.SelectSingleNode("bookstore");//查找 XmlElement xe1 = xmlDoc.CreateElement("book");//创建一个节点 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);//添加到节点中 xmlDoc.Save("bookstore.xml");
//===============================================
结果为:
<?xml version="1.0" encoding="gb2312"?>
<bookstore>
<book genre="fantasy" ISBN="2-3631-4">
<title>Oberon's Legacy</title>
<author>Corets, Eva</author>
<price>5.95</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>
2、修改节点:将genre属性值为“李赞红“的节点的genre值改为“update李赞红”,将该节点的子节点<author>的文本修改为“亚胜”。
- XmlNodeList nodeList = xmlDoc.SelectSingleNode("bookstore").ChildNodes;
- foreach (XmlNode xn in nodeList)
- {
- XmlElement xe = (XmlElement)xn;
- if (xe.GetAttribute("genre") == "李赞红")
- {
- xe.SetAttribute("genre", "update李赞红");
-
- XmlNodeList nls = xe.ChildNodes;
- foreach (XmlNode xn1 in nls)
- {
- XmlElement xe2 = (XmlElement)xn1;
- if (xe2.Name == "author")
- {
- xe2.InnerText = "亚胜";
- break;
- }
- }
- break;
- }
- }
-
- xmlDoc.Save("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;//找到退出来就可以了 } } break; } } xmlDoc.Save("bookstore.xml");//保存。
//==================================================
最后结果为:
<?xml version="1.0" encoding="gb2312"?>
<bookstore>
<book genre="fantasy" ISBN="2-3631-4">
<title>Oberon's Legacy</title>
<author>Corets, Eva</author>
<price>5.95</price>
</book>
<book genre="update李赞红" ISBN="2-3631-4">
<title>CS从入门到精通</title>
<author>亚胜</author>
<price>58.3</price>
</book>
</bookstore>
3、删除 <book genre="fantasy" ISBN="2-3631-4">节点的genre属性,删除 <book genre="update李赞红" ISBN="2-3631-4">节点。
- XmlNodeList xnl = xmlDoc.SelectSingleNode("bookstore").ChildNodes;
-
- foreach (XmlNode xn in xnl)
- {
- XmlElement xe = (XmlElement)xn;
- if (xe.GetAttribute("genre") == "fantasy")
- {
- xe.RemoveAttribute("genre");
- }
- else if (xe.GetAttribute("genre") == "update李赞红")
- {
- xe.RemoveAll();
- }
- }
- xmlDoc.Save("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("bookstore.xml");
//===========================================
最后结果为:
<?xml version="1.0" encoding="gb2312"?>
<bookstore>
<book ISBN="2-3631-4">
<title>Oberon's Legacy</title>
<author>Corets, Eva</author>
<price>5.95</price>
</book>
<book>
</book>
</bookstore>
4、显示所有数据。
- XmlNode xn = xmlDoc.SelectSingleNode("bookstore");
-
- XmlNodeList xnl = xn.ChildNodes;
-
- foreach (XmlNode xnf in xnl)
- {
- XmlElement xe = (XmlElement)xnf;
- Console.WriteLine(xe.GetAttribute("genre"));
- Console.WriteLine(xe.GetAttribute("ISBN"));
-
- XmlNodeList xnf1 = xe.ChildNodes;
- foreach (XmlNode xn2 in xnf1)
- {
- Console.WriteLine(xn2.InnerText);
- }
- }
引用本页地址:http://www.yongfa365.com/item/CZhongCaoZuoXMLWenJianDuXieGaiShanQuanJieChuGenQiTaYuYanCaoZuoXMLChaBuDuoYiYang.html