xml Show_Update (2)
CODE:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml;
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public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
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}
protected void Button1_Click(object sender, EventArgs e)
{
this.GetNodeValue("c:\\myxml.xml","date");
this.UpdateNodeValue("c:\\myxml.xml","date", "2007-05-30");
}
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public void GetNodeValue(string xmlName,string noteName)
{
//方法1.用XmlTextReader
//XmlTextReader reader = new XmlTextReader(xmlName);
//while (reader.Read())
//{
// if (reader.IsStartElement(noteName))
// {
// reader.Read();
// this.Label1.Text = reader.Value;
// }
//}
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//方法2.用XmlDocument
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(xmlName);
XmlNode node = xmlDoc.SelectSingleNode("sys"); //根结点sys
XmlNode nodeValue = node.SelectSingleNode(".//" + noteName);
if (nodeValue != null)
{
this.Label1.Text = nodeValue.InnerText;
}
}
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public void UpdateNodeValue(string xmlName,string nodeName ,string nodeValue)
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(xmlName);
XmlNode node = xmlDoc.SelectSingleNode("sys");
XmlNode childNode = xmlDoc.SelectSingleNode(".//" + nodeName);
if (childNode != null)
{
childNode.InnerText = nodeValue;
xmlDoc.Save(xmlName);
this.GetNodeValue("date");
}
}
}
XML:
<?xml version="1.0" encoding="gb2312"?>
<sys>
<set>
<ISPLAY intro="是否播放:Y否,N是">Y</ISPLAY>
<filePath intro="文件路径">c:\adFile\</filePath>
<date intro="日期">2007-05-30</date>
<version intro="版本号">01</version>
</set>
<t>TestValue</t>
<tt>
<ttt>
<tttt>43</tttt>
</ttt>
</tt>
</sys>
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XML:
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