C# 常用类-IO-ClassXML

自己验证收藏的代码, 用来备份代码, 内容全部来自网上, 时间有些久远, 因此没有标注出处. using System; using System.Collections.Generic; using System.Data; using System.IO; using System.Linq; using System.Text; using System.Xml;class ClassXML {//声明一个XmlDocument空对象protected XmlDocument XmlDoc = new XmlDocument();/// <summary>/// 构造函数，导入Xml文件/// </summary>/// <param name="xmlFile">文件虚拟路径</param>public ClassXML(string xmlFile){try{XmlDoc.Load(GetXmlFilePath(xmlFile)); //载入Xml文档 }catch (System.Exception ex){throw ex;}}/// <summary>/// 析构函数/// </summary>~ClassXML(){XmlDoc = null; //释放XmlDocument对象 }/// <summary>/// 保存文件/// </summary>/// <param name="filePath">文件虚拟路径</param>public void Save(string filePath){try{XmlDoc.Save(GetXmlFilePath(filePath));}catch (System.Exception ex){throw ex;}}/// <summary>/// 返回Xml文件实际路径/// </summary>/// <param name="xmlFile">文件虚拟路径</param>/// <returns></returns>public string GetXmlFilePath(string xmlFile){return xmlFile;//return HttpContext.Current.Server.MapPath(xmlFile); }/// <summary>/// 根据Xml文件的节点路径，返回一个DataSet数据集/// </summary>/// <param name="XmlPathNode">Xml文件的某个节点</param>/// <returns></returns>public DataSet GetDs(string XmlPathNode){DataSet ds = new DataSet();try{System.IO.StringReader read = new System.IO.StringReader(XmlDoc.SelectSingleNode(XmlPathNode).OuterXml);ds.ReadXml(read); //利用DataSet的ReadXml方法读取StringReader文件流 read.Close();}catch{ }return ds;}/// <summary>/// 属性查询，返回属性值/// </summary>/// <param name="XmlPathNode">属性所在的节点</param>/// <param name="Attrib">属性</param>/// <returns></returns>public string SelectAttrib(string XmlPathNode, string Attrib){string _strNode = "";try{_strNode = XmlDoc.SelectSingleNode(XmlPathNode).Attributes[Attrib].Value;}catch{ }return _strNode;}/// <summary>/// 节点查询，返回节点值/// </summary>/// <param name="XmlPathNode">节点的路径</param>/// <returns></returns>public string SelectNodeText(string XmlPathNode){string _nodeTxt = XmlDoc.SelectSingleNode(XmlPathNode).InnerText;if (_nodeTxt == null || _nodeTxt == "")return "";elsereturn _nodeTxt;}/// <summary>/// 节点值查询判断/// </summary>/// <param name="XmlPathNode">父节点</param>/// <param name="index">节点索引</param>/// <param name="NodeText">节点值</param>/// <returns></returns>public bool SelectNode(string XmlPathNode, int index, string NodeText){try{XmlNodeList _NodeList = XmlDoc.SelectNodes(XmlPathNode);//循环遍历节点，查询是否存在该节点for (int i = 0; i < _NodeList.Count; i++){if (_NodeList[i].ChildNodes[index].InnerText == NodeText){return true;break;}}}catch{}return false;}/// <summary>/// 获取子节点个数/// </summary>/// <param name="XmlPathNode">父节点</param>/// <returns></returns>public int NodeCount(string XmlPathNode){int i = 0;try{i = XmlDoc.SelectSingleNode(XmlPathNode).ChildNodes.Count;}catch{i = 0;}return i;}/// <summary>/// 更新一个节点的内容/// </summary>/// <param name="XmlPathNode">节点的路径</param>/// <param name="Content">新的节点值</param>/// <returns></returns>public bool UpdateNode(string XmlPathNode, string NodeContent){try{XmlDoc.SelectSingleNode(XmlPathNode).InnerText = NodeContent;return true;}catch{return false;}}/// <summary>/// 更新N个节点值/// </summary>/// <param name="XmlParentNode">父节点</param>/// <param name="XmlNode">子节点</param>/// <param name="NodeContent">子节点内容</param>/// <returns></returns>public bool UpdateNode(string XmlParentNode, string[] XmlNode, string[] NodeContent){try{//根据节点数组循环修改节点值for (int i = 0; i < XmlNode.Length; i++){XmlDoc.SelectSingleNode(XmlParentNode + "/" + XmlNode[i]).InnerText = NodeContent[i];}return true;}catch{return false;}}/// <summary>/// 修改属性/// </summary>/// <param name="XmlPathNode">属性所在的节点</param>/// <param name="Attrib">属性名</param>/// <param name="Content">属性值</param>/// <returns></returns>public bool UpdateAttrib(string XmlPathNode, string Attrib, string AttribContent){try{//修改属性值XmlDoc.SelectSingleNode(XmlPathNode).Attributes[Attrib].Value = AttribContent;return true;}catch{return false;}}/// <summary>/// 添加属性/// </summary>/// <param name="MainNode">属性所在节点</param>/// <param name="Attrib">属性名</param>/// <param name="AttribContent">属性值</param>/// <returns></returns>public bool InsertAttrib(string MainNode, string Attrib, string AttribContent){try{XmlElement objNode = (XmlElement)XmlDoc.SelectSingleNode(MainNode); //强制转化成XmlElement对象objNode.SetAttribute(Attrib, AttribContent); //XmlElement对象添加属性方法 return true;}catch{return false;}}/// <summary>/// 插入一个节点，带N个子节点/// </summary>/// <param name="MainNode">插入节点的父节点</param>/// <param name="ChildNode">插入节点的元素名</param>/// <param name="Element">插入节点的子节点名数组</param>/// <param name="Content">插入节点的子节点内容数组</param>/// <returns></returns>public bool InsertNode(string MainNode, string ChildNode, string[] Element, string[] Content){try{XmlNode objRootNode = XmlDoc.SelectSingleNode(MainNode); //声明XmlNode对象XmlElement objChildNode = XmlDoc.CreateElement(ChildNode); //创建XmlElement对象 objRootNode.AppendChild(objChildNode);for (int i = 0; i < Element.Length; i++) //循环插入节点元素 {XmlElement objElement = XmlDoc.CreateElement(Element[i]);objElement.InnerText = Content[i];objChildNode.AppendChild(objElement);}return true;}catch{return false;}}/// <summary>/// 删除一个节点/// </summary>/// <param name="Node">要删除的节点</param>/// <returns></returns>public bool DeleteNode(string Node){try{//XmlNode的RemoveChild方法来删除节点及其所有子节点 XmlDoc.SelectSingleNode(Node).ParentNode.RemoveChild(XmlDoc.SelectSingleNode(Node));return true;}catch{return false;}} } ClassXML

 

调用代码:

string _fileName = System.Threading.Thread.GetDomain().BaseDirectory + "Config.xml";private void LoadPar(){ClassXML xml = new ClassXML(_fileName);edtMachineName.Text = xml.SelectNodeText("Config/MachineName");edtOrderNO.Text = xml.SelectNodeText("Config/OrderNO");edtOperator.Text = xml.SelectNodeText("Config/Operator");}private void SetPar(){ClassXML xml=new ClassXML(_fileName);xml.UpdateNode("Config/MachineName", edtMachineName.Text);xml.UpdateNode("Config/OrderNO", edtOrderNO.Text);xml.UpdateNode("Config/Operator", edtOperator.Text);xml.Save(_fileName);} Demo

 

转载于:https://www.cnblogs.com/percent10/p/10186166.html

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