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本文实例讲述了C#实现的XML操作类。分享给大家供大家参考。具体如下：
这里讲述了C#写的一个XML操作类，包括读取/插入/修改/删除。
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;
namespace PuTianCheng
{
/// <summary>
/// XmlHelper 的摘要说明
/// </summary>
public class XmlHelper
{
public XmlHelper()
{
}
/// <summary>
/// 读取数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="node">节点</param>
/// <param name="attribute">属性名，非空时返回该属性值，否则返回串联值</param>
/// <returns>string</returns>
public static string Read(string path, string node, string attribute)
{
string value = "";
try
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode xn = doc.SelectSingleNode(node);
value = (attribute.Equals("") ? xn.InnerText : xn.Attributes[attribute].Value);
}
catch { }
return value;
}
/// <summary>
/// 插入数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="node">节点</param>
/// <param name="element">元素名，非空时插入新元素，否则在该元素中插入属性</param>
/// <param name="attribute">属性名，非空时插入该元素属性值，否则插入元素值</param>
/// <param name="value">值</param>
/// <returns></returns>
public static void Insert(string path, string node, string element, string attribute, string value)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode xn = doc.SelectSingleNode(node);
if (element.Equals(""))
{
if (!attribute.Equals(""))
{
XmlElement xe = (XmlElement)xn;
xe.SetAttribute(attribute, value);
}
}
else
{
XmlElement xe = doc.createElement_x(element);
if (attribute.Equals(""))
xe.InnerText = value;
else
xe.SetAttribute(attribute, value);
xn.AppendChild(xe);
}
doc.Save(path);
}
catch { }
}
/// <summary>
/// 修改数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="node">节点</param>
/// <param name="attribute">属性名，非空时修改该节点属性值，否则修改节点值</param>
/// <param name="value">值</param>
/// <returns></returns>
public static void Update(string path, string node, string attribute, string value)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode xn = doc.SelectSingleNode(node);
XmlElement xe = (XmlElement)xn;
if (attribute.Equals(""))
xe.InnerText = value;
else
xe.SetAttribute(attribute, value);
doc.Save(path);
}
catch { }
}
/// <summary>
/// 删除数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="node">节点</param>
/// <param name="attribute">属性名，非空时删除该节点属性值，否则删除节点值</param>
/// <param name="value">值</param>
/// <returns></returns>
public static void Delete(string path, string node, string attribute)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode xn = doc.SelectSingleNode(node);
XmlElement xe = (XmlElement)xn;
if (attribute.Equals(""))
xn.ParentNode.RemoveChild(xn);
else
xe.RemoveAttribute(attribute);
doc.Save(path);
}
catch { }
}
}
}
</div>
XmlFile.xml：
<?xml version="1.0" encoding="utf-8"?> <Root /></div>
使用方法：
string xml = Server.MapPath("XmlFile.xml");
//插入元素
XmlHelper.Insert(xml, "/Root", "Studio", "", "");
//插入元素/属性
XmlHelper.Insert(xml, "/Root/Studio", "Site", "Name", "小路工作室");
XmlHelper.Insert(xml, "/Root/Studio", "Site", "Name", "丁香鱼工作室");
XmlHelper.Insert(xml, "/Root/Studio", "Site", "Name", "谱天城工作室");
XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='谱天城工作室']", "Master", "", "红尘静思");
//插入属性
XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='小路工作室']", "", "Url", "http://www.wzlu.com/");
XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='丁香鱼工作室']", "", "Url", "http://www.luckfish.net/");
XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='谱天城工作室']", "", "Url", "http://www.putiancheng.com/");
//修改元素值
XmlHelper.Update(xml, "/Root/Studio/Site[@Name='谱天城工作室']/Master", "", "RedDust");
//修改属性值
XmlHelper.Update(xml, "/Root/Studio/Site[@Name='谱天城工作室']", "Url", "http://www.putiancheng.net/");
XmlHelper.Update(xml, "/Root/Studio/Site[@Name='谱天城工作室']", "Name", "PuTianCheng Studio");
//读取元素值
Response.Write("<div>" + XmlHelper.Read(xml, "/Root/Studio/Site/Master", "") + "</div>");
//读取属性值
Response.Write("<div>" + XmlHelper.Read(xml, "/Root/Studio/Site", "Url") + "</div>");
//读取特定属性值
Response.Write("<div>" + XmlHelper.Read(xml, "/Root/Studio/Site[@Name='丁香鱼工作室']", "Url") + "</div>");
//删除属性
XmlHelper.Delete(xml, "/Root/Studio/Site[@Name='小路工作室']", "Url");
//删除元素
XmlHelper.Delete(xml, "/Root/Studio", "");
</div>
希望本文所述对大家的C#程序设计有所帮助。
</div>