XML读取，XML修改，XML删除
第一种：单独写一个XML类
XMLHelper类
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
namespace DZ.DAL
{
public class XMLHeleper
{
/// <summary>
/// 获取当XMl中的节点
/// </summary>
/// <returns></returns>
public string GetXMLNodeName(string path, string nodeName)
{
XmlDocument xml = new XmlDocument();
xml.Load(path);
XmlNode node = xml.SelectSingleNode(nodeName);
return node.InnerText;
}
/// <summary>
/// 修改
/// </summary>
/// <param name="path"></param>
/// <param name="node"></param>
/// <param name="value"></param>
/// <returns></returns>
public bool Update(string path, string node, string value)
{
try
{
XmlDocument xl = new XmlDocument();
xl.Load(path);
XmlNode nodes = xl.SelectSingleNode(node);
nodes.InnerText = value;
xl.Save(path);
return true;
}
catch (Exception)
{
return false;
}
}
}
}
调用：
public string FilePath = AppDomain.CurrentDomain.BaseDirectory.ToString() + "\\Base.XML"; //获取文件路径
XMLHeleper XML = new XMLHeleper();
XML查询：
/// <summary>
/// 查询XML文件
/// </summary>
public void SelectDBDataBase()
{
string AddressIP = XML.GetXMLNodeName(FilePath, "//DataConfig//BAddress//DataAdd");
...........
............
.........
......
}
修改文件：
public void UpDateXMLFile()
{
string ipaddress = "123456789";
XML.Update(FilePath, "//DataConfig//BAddress//DataAdd", ipaddress);
.......
.......
.......
}
XML文件：
文件名：Base.XML
<DataConfig>
<BAddress>
<DataAdd>123</DataAdd>
<DataDK>123</DataDK>
<DataLogin>123</DataLogin>
<DataName>123</DataName>
<DataPwd>123</DataPwd>
</BAddress>
<WAddress>
<DataAdd>123</DataAdd>
<DataDK>123</DataDK>
<DataLogin>123</DataLogin>
<DataName>123</DataName>
<DataPwd>123</DataPwd>
</WAddress>
</DataConfig>
第二种：直接调用VS开发工具中的XML类
加载XML文件：
/// <summary>
/// 加载XML文件
/// </summary>
public void LoadXMLFile()
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("Data.xml")); //加载XML文档
XmlNodeList NodeList = xmlDoc.SelectNodes("/zws/bz/zw"); //找到XML节点
if (NodeList == null)
{
return;
}
string zw = null;
for (int i = 0; i < NodeList.Count; i++)
{
zw += NodeList[i].ChildNodes[0].InnerText + ",";
}
txtLeader.Text = zw;
}
/// <summary>
/// 删除XML文件中的节点及值后在添加节点
/// </summary>
public void UpDateXMLFile()
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("zw.xml")); //加载文件
XmlNode rootElement = xmlDoc.SelectSingleNode("zws");
XmlNodeList xnl = rootElement.ChildNodes;//zws的所有子节点
foreach (XmlNode xn in xnl)
{
XmlElement xe = (XmlElement)xn;
if (xe.Name == "bz")
{
xe.RemoveAll();
}
}
xmlDoc.Save(Server.MapPath("zw.xml"));
string txtContext = this.txtLeader.Text;
string[] str = txtContext.Split(',');
for (int i = 0; i < str.Length; i++)
{
string xml = str[i];
if (!string.IsNullOrEmpty(xml))
{
XmlNode xmldocselect = xmlDoc.SelectSingleNode("zws/bz"); //加载到的根节点
XmlElement xes = xmlDoc.CreateElement("zw"); //添加的子节点名称
xes.InnerText = xml;
//xes.AppendChild(xes);
xmldocselect.AppendChild(xes);
xmlDoc.Save(Server.MapPath("zw.xml"));
}
}
}
XML文件：
XML文件名：Data.XML
<zws>
<bm>2761290</bm>
<mima>123456</pw>
<isopen>0</isopen>
<bz>
<zw>1</zw>
<zw>2</zw>
<zw>3</zw>
<zw>4</zw>
</bz>
</zws>
