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這篇文章主要介紹了C#-XML操作類的示例分析,具有一定借鑒價值,感興趣的朋友可以參考下,希望大家閱讀完這篇文章之后大有收獲,下面讓小編帶著大家一起了解一下。
寫的一個XML操作類,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,否則返回串聯值</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,否則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,否則插入元素值</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,否則修改節點值</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,否則刪除節點值</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 { } } } }
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XmlFile.xml:
<?xml version="1.0" encoding="utf-8"?> <Root />
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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", "小路工作室"); //XmlHelper.Insert(xml, "/Root/Studio", "Site", "Name", "丁香魚工作室"); //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='小路工作室']", "", "Url", "http://www.wzlu.com/"); //XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='丁香魚工作室']", "", "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("<p>" + XmlHelper.Read(xml, "/Root/Studio/Site/Master", "") + "</p>"); //讀取屬性值 //Response.Write("<p>" + XmlHelper.Read(xml, "/Root/Studio/Site", "Url") + "</p>"); //讀取特定屬性值 //Response.Write("<p>" + XmlHelper.Read(xml, "/Root/Studio/Site[@Name='丁香魚工作室']", "Url") + "</p>"); //刪除屬性 //XmlHelper.Delete(xml, "/Root/Studio/Site[@Name='小路工作室']", "Url"); //刪除元素 //XmlHelper.Delete(xml, "/Root/Studio", "");
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