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[0].Text); Xmlroot = textdoc.SelectSingleNode("TreeExXMLCls"); //------遍历原treeview控件，并生成相应的XML TransTreeSav(thetreeview.Nodes, (XmlElement)Xmlroot); return 0; } 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 > 0) { TransTreeSav(node.Nodes, xmlnode); } } textdoc.Save(xmlfilepath); return 0; } #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 0; } 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 > 0) { TransXML(xmlnod.ChildNodes, subtrnod); } } return 0; } #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。