有一个xml文件:data.xml,内容如下:
<?xml version="1.0" encoding="gb2312"?>
<data>
<web>
<pic title="超人前传1" src="sony1.swf" buy="link1.html" image="images/simg1.jpg"/>
<pic title="超人前传2" src="sony2.swf" buy="link2.html" image="images/simg2.jpg"/>
<pic title="超人前传3" src="sony3.swf" buy="link3.html" image="images/simg3.jpg"/>
<pic title="超人前传4" src="sony4.swf" buy="link4.html" image="images/simg4.jpg"/>
<pic title="超人前传5" src="sony.swf" buy="link5.html" image="images/simg5.jpg"/>
<pic title="超人前传6" src="sony.swf" buy="link6.html" image="images/simg6.jpg"/>
<pic title="超人前传7" src="sony.swf" buy="link7.html" image="images/simg7.jpg"/>
<pic title="超人前传8" src="sony.swf" buy="link8.html" image="images/simg8.jpg"/>
<pic title="超人前传9" src="sony.swf" buy="link9.html" image="images/simg9.jpg"/>
</web>
</data>我如何用程序实现几点内容的更新?我只想要更新,不能是增加节点的那种.
<?xml version="1.0" encoding="gb2312"?>
<data>
<web>
<pic title="超人前传1" src="sony1.swf" buy="link1.html" image="images/simg1.jpg"/>
<pic title="超人前传2" src="sony2.swf" buy="link2.html" image="images/simg2.jpg"/>
<pic title="超人前传3" src="sony3.swf" buy="link3.html" image="images/simg3.jpg"/>
<pic title="超人前传4" src="sony4.swf" buy="link4.html" image="images/simg4.jpg"/>
<pic title="超人前传5" src="sony.swf" buy="link5.html" image="images/simg5.jpg"/>
<pic title="超人前传6" src="sony.swf" buy="link6.html" image="images/simg6.jpg"/>
<pic title="超人前传7" src="sony.swf" buy="link7.html" image="images/simg7.jpg"/>
<pic title="超人前传8" src="sony.swf" buy="link8.html" image="images/simg8.jpg"/>
<pic title="超人前传9" src="sony.swf" buy="link9.html" image="images/simg9.jpg"/>
</web>
</data>我如何用程序实现几点内容的更新?我只想要更新,不能是增加节点的那种.
XmlDocument 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
{
XmlElement 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。
xmlDoc.Load(Server.MapPath("你的xml文件"));
XmlNodeList nodeList=xmlDoc.SelectSingleNode("data").ChildNodes;//获取dbGuest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
XmlNodeList node = xe.GetElementsByTagName("title");
if(node.Count>0)
{ if(node[0].InnerText=="超人前传9"
{
XmlNodeList nls=xe.ChildNodes;
foreach(XmlNode xn1 in nls)//遍历
{
XmlElement xe2=(XmlElement)xn1;
if(xe2.Name=="src")
{
xe2.InnerText=新值; //修改
break }
}
break;
}
}
}
xmlDoc.Save(Server.MapPath("你的xml文件"));