c#XML文件操作类 实用的XML操作
using System.Collections.Generic;
using System.Text;
using System.Xml;
namespace ZfClient
{
public class XmlHelper
{
///
/// 读取数据
///
/// 路径
/// 节点
/// 属性名，非空时返回该属性值，否则返回串联值
///
/**************************************************
* 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;
}
///
/// 插入数据
///
/// 路径
/// 节点
/// 元素名，非空时插入新元素，否则在该元素中插入属性
/// 属性名，非空时插入该元素属性值，否则插入元素值
/// 值
///
/**************************************************
* 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 { }
}
///
/// 修改数据
///
/// 路径
/// 节点
/// 属性名，非空时修改该节点属性值，否则修改节点值
/// 值
///
/**************************************************
* 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 { }
}
///
/// 删除数据
///
/// 路径
/// 节点
/// 属性名，非空时删除该节点属性值，否则删除节点值
/// 值
///
/**************************************************
* 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 { }
}
//使用简介
//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", "搞笑图片");
//XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='搞笑图片']", "Master", "", "边缘星");
//插入属性
//XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='搞笑图片']", "", "Url", "http://www.2btu.com/");
//修改元素值
//XmlHelper.Update(xml, "/Root/Studio/Site[@Name='搞笑图片']/Master", "", "RedDust");
//修改属性值
//XmlHelper.Update(xml, "/Root/Studio/Site[@Name='搞笑图片']", "Url", "http://www.2btu.com/");
//XmlHelper.Update(xml, "/Root/Studio/Site[@Name='搞笑图片']", "Name", "PuTianCheng Studio");
//读取元素值
//Response.Write( XmlHelper.Read(xml, "/Root/Studio/Site/Master", ""));
//读取属性值
//Response.Write( XmlHelper.Read(xml, "/Root/Studio/Site", "Url") );
//读取特定属性值
//Response.Write( XmlHelper.Read(xml, "/Root/Studio/Site[@Name='搞笑图片']", "Url"));
//删除属性
//XmlHelper.Delete(xml, "/Root/Studio/Site[@Name='搞笑图片']", "Url");
//删除元素
//XmlHelper.Delete(xml, "/Root/Studio", "");
}
}