寫的一個XML操做類，包括讀取/插入/修改/刪除。

寫的一個XML操做類，包括讀取/插入/修改/刪除。

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 的摘要說明
/// </summary>
public class XmlHelper
{
public XmlHelper()
{
}

/// <summary>
/// 讀取數據
/// </summary>
/// <param name="path"> 路徑 </param>
/// <param name="node"> 節點 </param>
/// <param name="attribute"> 屬性名，非空時返回該屬性值，不然返回串聯值 </param>
/// <returns> string </returns>
/* *************************************************
* 使用示列:
* XmlHelper.Read(path, "/Node", "")
* XmlHelper.Read(path, "/Node/Element[@Attribute='Name']", "Attribute")
*********************************************** */
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>
/// 插入數據
/// </summary>
/// <param name="path"> 路徑 </param>
/// <param name="node"> 節點 </param>
/// <param name="element"> 元素名，非空時插入新元素，不然在該元素中插入屬性 </param>
/// <param name="attribute"> 屬性名，非空時插入該元素屬性值，不然插入元素值 </param>
/// <param name="value"> 值 </param>
/// <returns></returns>
/* *************************************************
* 使用示列:
* XmlHelper.Insert(path, "/Node", "Element", "", "Value")
* XmlHelper.Insert(path, "/Node", "Element", "Attribute", "Value")
* XmlHelper.Insert(path, "/Node", "", "Attribute", "Value")
*********************************************** */
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(element);
if (attribute.Equals( ""))
xe.InnerText = value;
else
xe.SetAttribute(attribute, value);
xn.AppendChild(xe);
}
doc.Save(path);
}
catch { }
}

/// <summary>
/// 修改數據
/// </summary>
/// <param name="path"> 路徑 </param>
/// <param name="node"> 節點 </param>
/// <param name="attribute"> 屬性名，非空時修改該節點屬性值，不然修改節點值 </param>
/// <param name="value"> 值 </param>
/// <returns></returns>
/* *************************************************
* 使用示列:
* XmlHelper.Insert(path, "/Node", "", "Value")
* XmlHelper.Insert(path, "/Node", "Attribute", "Value")
*********************************************** */
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>
/// 刪除數據
/// </summary>
/// <param name="path"> 路徑 </param>
/// <param name="node"> 節點 </param>
/// <param name="attribute"> 屬性名，非空時刪除該節點屬性值，不然刪除節點值 </param>
/// <param name="value"> 值 </param>
/// <returns></returns>
/* *************************************************
* 使用示列:
* XmlHelper.Delete(path, "/Node", "")
* XmlHelper.Delete(path, "/Node", "Attribute")
*********************************************** */
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 { }
}
}
}

==================================================

XmlFile.xml：
<?xml version="1.0" encoding="utf-8"?>
<Root />

==================================================

使用方法：

string xml = Server.MapPath("XmlFile.xml");
//插入元素
//XmlHelper.Insert(xml, "/Root", "Studio", "", "");
//插入元素/屬性
//XmlHelper.Insert(xml, "/Root/Studio", "Site", "Name", "小路工做室");
//XmlHelper.Insert(xml, "/Root/Studio", "Site", "Name", "丁香魚工做室");
//XmlHelper.Insert(xml, "/Root/Studio", "Site", "Name", "五月軟件");
//XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='五月軟件]", "Master", "", "五月");
//插入屬性
//XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='小路工做室']", "", "Url", "http://www.wzlu.com/");
//XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='丁香魚工做室']", "", "Url", "http://www.luckfish.net/");
//XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='五月軟件]", "", "Url", "http://www.vs2005.com.cn/");
//修改元素值
//XmlHelper.Update(xml, "/Root/Studio/Site[@Name='五月軟件]/Master", "", "Wuyue");
//修改屬性值
//XmlHelper.Update(xml, "/Root/Studio/Site[@Name='五月軟件]", "Url", "http://www.vs2005.com.cn/");
//XmlHelper.Update(xml, "/Root/Studio/Site[@Name='五月軟件]", "Name", "MaySoft");
//讀取元素值
//Response.Write("<div>" + XmlHelper.Read(xml, "/Root/Studio/Site/Master", "") + "</div>");
//讀取屬性值
//Response.Write("<div>" + XmlHelper.Read(xml, "/Root/Studio/Site", "Url") + "</div>");
//讀取特定屬性值
//Response.Write("<div>" + XmlHelper.Read(xml, "/Root/Studio/Site[@Name='丁香魚工做室']", "Url") + "</div>");
//刪除屬性
//XmlHelper.Delete(xml, "/Root/Studio/Site[@Name='小路工做室']", "Url");
//刪除元素
//XmlHelper.Delete(xml, "/Root/Studio", "");