C#：XML操作类

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("<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", "");

C#中xml写入treeview，treeview写入xml

using System;

using System.Collections.Generic;

using System.Text;

using System.Windows.Forms;

using System.Xml;   

namespace treeview2   //你的项目名

{

    class TreeExXMLCls

    {

        private TreeView thetreeview;

        private string xmlfilepath;

        XmlTextWriter textWriter;

        XmlNode Xmlroot;

        XmlDocument textdoc;   

        public TreeExXMLCls()

        {

            //----构造函数

            textdoc = new XmlDocument();   

        }   

        ~TreeExXMLCls()

        {

            //----析构函数

        }  

        #region 遍历treeview并实现向XML的转化

        /// <summary>

        /// 遍历treeview并实现向XML的转化

        /// </summary>

        /// <param name="TheTreeView">树控件对象</param>

        /// <param name="XMLFilePath">XML输出路径</param>

        /// <returns>0表示函数顺利执行</returns>      

        public int TreeToXML(TreeView TheTreeView, string XMLFilePath)

        {

            //-------初始化转换环境变量

            thetreeview = TheTreeView;

            xmlfilepath = XMLFilePath;

            textWriter = new XmlTextWriter(xmlfilepath, null);   

            //-------创建XML写操作对象

            textWriter.Formatting = Formatting.Indented;   

            //-------开始写过程，调用WriteStartDocument方法

            textWriter.WriteStartDocument();   

            //-------写入说明

            textWriter.WriteComment("this XML is created from a tree");   

            //-------添加第一个根节点

            textWriter.WriteStartElement("TreeExXMLCls");

            textWriter.WriteEndElement();   

            //------ 写文档结束，调用WriteEndDocument方法

            textWriter.WriteEndDocument();   

            //-----关闭输入流

            textWriter.Close();   

            //-------创建XMLDocument对象

            textdoc.Load(xmlfilepath);   

            //------选中根节点

            XmlElement Xmlnode=textdoc.CreateElement(thetreeview.Nodes[].Text);

            Xmlroot = textdoc.SelectSingleNode("TreeExXMLCls");   

            //------遍历原treeview控件，并生成相应的XML

            TransTreeSav(thetreeview.Nodes, (XmlElement)Xmlroot);

            return ;

        }   

        private int TransTreeSav(TreeNodeCollection nodes, XmlElement ParXmlnode)

        {   

            //-------遍历树的各个故障节点，同时添加节点至XML

            XmlElement xmlnode;

            Xmlroot = textdoc.SelectSingleNode("TreeExXMLCls");   

            foreach (TreeNode node in nodes)

            {

                xmlnode = textdoc.CreateElement(node.Text);

                ParXmlnode.AppendChild(xmlnode);   

                if (node.Nodes.Count > )

                {

                    TransTreeSav(node.Nodes, xmlnode);

                }

            }

            textdoc.Save(xmlfilepath);

            return ;

        }  

        #endregion  

        #region 遍历XML并实现向tree的转化

        /// <summary>

        /// 遍历treeview并实现向XML的转化

        /// </summary>

        /// <param name="XMLFilePath">XML输出路径</param>

        /// <param name="TheTreeView">树控件对象</param>

        /// <returns>0表示函数顺利执行</returns>      

        public int XMLToTree(string XMLFilePath,TreeView TheTreeView)

        {

            //-------重新初始化转换环境变量

            thetreeview = TheTreeView;

            xmlfilepath = XMLFilePath;   

            //-------重新对XMLDocument对象赋值

            textdoc.Load(xmlfilepath);

            XmlNode root = textdoc.SelectSingleNode("Authors_Table");//读的xml的节点名

            foreach (XmlNode subXmlnod in root.ChildNodes)

            {

                TreeNode trerotnod = new TreeNode();

                trerotnod.Text = subXmlnod.Name;

                thetreeview.Nodes.Add(trerotnod);

                TransXML(subXmlnod.ChildNodes, trerotnod);   

            }

            return ;

        }   

        private int TransXML(XmlNodeList Xmlnodes,TreeNode partrenod)

        {

            //------遍历XML中的所有节点，仿照treeview节点遍历函数

            foreach (XmlNode xmlnod in Xmlnodes)

            {

                TreeNode subtrnod = new TreeNode();

                subtrnod.Text = xmlnod.Name+xmlnod.value;

                partrenod.Nodes.Add(subtrnod);   

                if (xmlnod.ChildNodes.Count > )

                {

                    TransXML(xmlnod.ChildNodes, subtrnod);

                }

            }

            return ;

        }

        #endregion

    }

} 

上面是新建了个类。写完后要调用类方法

 private void button1_Click(object sender, EventArgs e)

        {

            TreeExXMLCls a = new TreeExXMLCls();

            a.XMLToTree("D:\\实验室\\匡老师项目\\wxample2.xml",treeView1);

        }

按钮单击事件激活方法。就可以把节点显示到treeview里了。

巴特西

C#：XML操作类

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