会员
周边
众包
新闻
博问
闪存
赞助商
所有博客
当前博客
我的博客
我的园子
账号设置
简洁模式
...
退出登录
注册
登录
DODONG
博客园
首页
新随笔
联系
订阅
管理
公告
C#操作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
"
);
//
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>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>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。
//
==================================================
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
"
);
//
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
"
));
//
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
}
}
posted on
2006-04-07 14:32
DODONG
阅读(
1008
) 评论(
2
)
编辑
收藏
举报
会员力量,点亮园子希望
刷新页面
返回顶部
Powered by:
博客园
Copyright © 2024 DODONG
Powered by .NET 8.0 on Kubernetes