C#-XML操作类的代码实例详解
16lz
2021-01-22
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> /************************************************** * 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> /************************************************** * 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> /************************************************** * 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> /// 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> /************************************************** * 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/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", "五月软件");//XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='五月软件]", "Master", "", "五月");//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='五月软件]", "", "Url", "http://www.vs2005.com.cn/");//修改元素值//XmlHelper.Update(xml, "/Root/Studio/Site[@Name='五月软件]/Master", "", "Wuyue");//修改属性值//XmlHelper.Update(xml, "/Root/Studio/Site[@Name='五月软件]", "Url", "http://www.vs2005.com.cn/");//XmlHelper.Update(xml, "/Root/Studio/Site[@Name='五月软件]", "Name", "MaySoft");//读取元素值//Response.Write("<p>" + XmlHelper.Read(xml, "/Root/Studio/Site/Master", "") + "</p>");//读取属性值//Response.Write("<p>" + XmlHelper.Read(xml, "/Root/Studio/Site", "Url") + "</p>");//读取特定属性值//Response.Write("<p>" + XmlHelper.Read(xml, "/Root/Studio/Site[@Name='丁香鱼工作室']", "Url") + "</p>");//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", "");以上就是C#-XML操作类的代码实例详解的内容，更多相关内容请关注PHP中文网（www.php.cn）！
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