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 { } } } }

XmlFile.xml：

<"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", "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", "");

希望本文所述对大家的C#程序设计有所帮助。