封装好的实用的读写XML类---增删改查XML

1、创建一个类：XmlHelper

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Windows.Forms;namespace WindowsFormsApplication14
{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;elsexe.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;elsexe.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);
                xn.RemoveAll();doc.Save(path);}catch { }}}
}

2、窗体单击按钮调用代码

private void button1_Click(object sender, EventArgs e){//删除元素XmlHelper.Delete("F:\\XmlFile.xml", "/Root", "");//表名XmlHelper.Insert("F:\\XmlFile.xml", "/Root", "Table", "name", "m_C_User");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table[@name='m_C_User']", "", "TableEqualsForm", "False");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table[@TableEqualsForm='False']", "", "title", "用户报表");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table[@title='用户报表']", "", "pageDown", "森林海科技有限公司");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table", "Items", "", "");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items", "Item", "name", "UserNo");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@name='UserNo']", "", "Text", "用户编号");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@Text='用户编号']", "", "width", "20");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@name='UserNo'and @Text='用户编号'and @width='20']", "", "summary", "False");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items", "Item", "name", "UserName");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@name='UserName']", "", "Text", "用户姓名");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@Text='用户姓名']", "", "width", "20");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@name='UserName'and @Text='用户姓名'and @width='20']", "", "summary", "False");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items", "Item", "name", "Sex");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@name='Sex']", "", "Text", "性别");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@Text='性别']", "", "width", "20");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@name='Sex'and @Text='性别'and @width='20']", "", "summary", "False");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items", "Item", "name", "TelNum");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@name='TelNum']", "", "Text", "联系电话");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@Text='联系电话']", "", "width", "20");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@name='TelNum'and @Text='联系电话'and @width='20']", "", "summary", "False");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items", "Item", "name", "DeptName");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@name='DeptName']", "", "Text", "部门");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@Text='部门']", "", "width", "20");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@name='DeptName'and @Text='部门'and @width='20']", "", "summary", "False");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items", "Item", "name", "Headship");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@name='Headship']", "", "Text", "职位");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@Text='职位']", "", "width", "20");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/Table/Items/Item[@name='Headship'and @Text='职位'and @width='20']", "", "summary", "False");//插入元素/属性XmlHelper.Insert("F:\\XmlFile.xml", "/Root", "ReportFild", "name", "m_C_User");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild", "Items", "", "");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items", "Item", "name", "UserNo");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items/Item[@name='UserNo']", "", "value", "True");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items/Item[@name='UserNo'and @value='True']", "", "width", "100");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items", "Item", "name", "UserName");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items/Item[@name='UserName']", "", "value", "True");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items/Item[@name='UserName'and @value='True']", "", "width", "100");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items", "Item", "name", "Sex");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items/Item[@name='Sex']", "", "value", "True");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items/Item[@name='Sex'and @value='True']", "", "width", "100");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items", "Item", "name", "TelNum");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items/Item[@name='TelNum']", "", "value", "True");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items/Item[@name='TelNum'and @value='True']", "", "width", "100");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items", "Item", "name", "DeptName");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items/Item[@name='DeptName']", "", "value", "True");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items/Item[@name='DeptName'and @value='True']", "", "width", "100");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items", "Item", "name", "Headship");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items/Item[@name='Headship']", "", "value", "True");XmlHelper.Insert("F:\\XmlFile.xml", "/Root/ReportFild/Items/Item[@name='Headship'and @value='True']", "", "width", "100");}

3、XmlFile.xml写入结果：

<?xml version="1.0" encoding="utf-8"?>
<Root><Table name="m_C_User" TableEqualsForm="False" title="用户报表" pageDown="森林海科技有限公司"><Items><Item name="UserNo" Text="用户编号" width="20" summary="False" /><Item name="UserName" Text="用户姓名" width="20" summary="False" /><Item name="Sex" Text="性别" width="20" summary="False" /><Item name="TelNum" Text="联系电话" width="20" summary="False" /><Item name="DeptName" Text="部门" width="20" summary="False" /><Item name="Headship" Text="职位" width="20" summary="False" /></Items></Table><ReportFild name="m_C_User"><Items><Item name="UserNo" value="True" width="100" /><Item name="UserName" value="True" width="100" /><Item name="Sex" value="True" width="100" /><Item name="TelNum" value="True" width="100" /><Item name="DeptName" value="True" width="100" /><Item name="Headship" value="True" width="100" /></Items></ReportFild>
</Root>

转载于:https://www.cnblogs.com/tanding/archive/2012/07/09/2582300.html

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封装好的实用的读写XML类---增删改查XML

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