XML增、删、改、（包含命名空间）

下面是工作遇到的对XML(包含命名空间)的增、删、改、操作。记录下来一遍日后回头看看，希望对大家有帮助！

XML模板<?xml version="1.0"?><!--Value值为xpath路径，列举节点中需要操作的属性--><operation><add> <a1 value="/configuration/appSettings"><add key="[e-mail]" value="ttttttt"> </add></a1> </add><edite> <b1 value="/configuration/appSettings"> <add key="DefaultDeviceConnectPassword" value="123456"> </add></b1> </edite><delete> <c2 value="/configuration/connectionStrings"><add key="DefaultDevice" value="123456"> </add></c2></delete></operation>代码片段/// <summary>/// 加载模板XML/// </summary>/// <returns></returns>public XmlDocument GetWebTemplate(){ string filename = string.Empty; filename = System.AppDomain.CurrentDomain.BaseDirectory + "WebTemplate.config"; XmlDocument webconfig = new XmlDocument(); webconfig.Load(filename); //加载配置文件 return webconfig;}#region 增加节点方法/// <summary>/// 获取增加节点的value值/// </summary>/// <returns></returns>public void CreateNodes(){ //加载模板xml XmlDocument webconfig = GetWebTemplate(); XmlNodeList root = webconfig.DocumentElement.ChildNodes; foreach (XmlElement item in root) { if (item.Name == "Add") { foreach (XmlElement it in item.ChildNodes) { string value = it.Attributes[0].InnerText; string node = "/Operation/Add" + "/" + it.Name; GetAddNodes(node, value); } } }}/// <summary>/// 获取新增节点的每条记录/// </summary>public void GetAddNodes(string node, string str){ string key = string.Empty; string value = string.Empty; Dictionary<string string=""> dictionary = new Dictionary<string string="">(); //加载模板xml XmlDocument webconfig = GetWebTemplate(); //使用xPath选择需要的节点 XmlNodeList nodes = webconfig.SelectNodes("" + node + "/add"); foreach (XmlNode item in nodes) { int number = nodes.Count; int num = item.Attributes.Count; for (int j = 0; j < num; j++) { key = item.Attributes[j].Name; value = item.Attributes[j].InnerText; if (!dictionary.ContainsKey(key)) { dictionary.Add(key, value); } } CreateXmlAttributeByXPath(str, dictionary, item.Name); //清空字典 dictionary.Clear(); }}/// <summary>/// 新增节点方法/// </summary>/// <param name="xpath"/>xpath/// <param name="dictionary"/>传入字典集合/// <param name="add"/>标志值/// <returns></returns>public bool CreateXmlAttributeByXPath(string xpath, Dictionary<string string=""> dictionary, string add){ bool isSuccess = false; string xmlFileName = System.AppDomain.CurrentDomain.BaseDirectory + "web.config"; XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 XmlNamespaceManager xnm = new XmlNamespaceManager(xmlDoc.NameTable); xnm.AddNamespace("x", "http://schemas.microsoft.com/.NetConfiguration/v2.0"); xpath = xpath.Replace("/", "/x:"); XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath, xnm); if (xmlNode != null) { //新增子节点 XmlElement subElement = xmlDoc.CreateElement(add, "http://schemas.microsoft.com/.NetConfiguration/v2.0"); foreach (KeyValuePair<string string=""> kvp in dictionary) { subElement.SetAttribute(kvp.Key, kvp.Value); } xmlNode.AppendChild(subElement); } xmlDoc.Save(xmlFileName); //保存到XML文档 isSuccess = true; } catch (Exception ex) { log.WriteLogFile("新增XML节点异常！" + ex.Message); } return isSuccess;}#endregion#region 修改节点方法/// <summary>/// 编辑XML/// </summary>public void UpdataXML(){ UpdateNodes(); ToAddNodes(); }/// <summary>/// 获取节点的value值/// </summary>/// <returns></returns>public void UpdateNodes(){ //加载模板xml XmlDocument webconfig = GetWebTemplate(); XmlNodeList root = webconfig.DocumentElement.ChildNodes; foreach (XmlElement item in root) { if (item.Name == "Edite") { foreach (XmlElement it in item.ChildNodes) { string value = it.Attributes[0].InnerText; string node = "/Operation/Edite" + "/" + it.Name; GetUpdateNodes(node, value); } } }}/// <summary>/// 修改节点属性值/// </summary>/// <param name="node"/>xpath/// <param name="str"/>修改的属性public void GetUpdateNodes(string node, string str){ string key = string.Empty; string value = string.Empty; Dictionary<string string=""> dictionary = new Dictionary<string string="">(); //加载模板xml XmlDocument webconfig = GetWebTemplate(); //使用xPath选择需要的节点 XmlNodeList nodes = webconfig.SelectNodes("" + node + "/add"); string itemkey = string.Empty; foreach (XmlNode item in nodes) { int num = item.Attributes.Count; for (int j = 0; j < num; j++) { key = item.Attributes[j].Name; value = item.Attributes[j].InnerText; //默认不放入第一条数据 if (j != 0) { dictionary.Add(key, value); } if (j == 0) { itemkey = value; } } DeleteALLXmlAttributeByXPath(item.Name, str, dictionary, itemkey); //清空字典 dictionary.Clear(); }}/// <summary>/// 重新添加节点/// </summary>public void ToAddNodes(){ //加载模板xml XmlDocument webconfig = GetWebTemplate(); XmlNodeList root = webconfig.DocumentElement.ChildNodes; foreach (XmlElement item in root) { if (item.Name == "Edite") { foreach (XmlElement it in item.ChildNodes) { string value = it.Attributes[0].InnerText; string node = "/Operation/Edite" + "/" + it.Name; GetAddNodes(node, value); } } }}#endregion#region 删除节点所有属性(删除节点)/// <summary>/// 删除节点属性值/// </summary>/// <returns></returns>public void DeleteAllNodes(){ //加载模板xml XmlDocument webconfig = GetWebTemplate(); XmlNodeList root = webconfig.DocumentElement.ChildNodes; foreach (XmlElement item in root) { if (item.Name == "Delete") { foreach (XmlElement it in item.ChildNodes) { string value = it.Attributes[0].InnerText; string node = "/Operation/Delete" + "/" + it.Name; GetDeleteAllNodes(node, value); } } }}/// <summary>/// 修改节点/// </summary>public void GetDeleteAllNodes(string node, string str){ string key = string.Empty; string value = string.Empty; Dictionary<string string=""> dictionary = new Dictionary<string string="">(); //加载模板xml XmlDocument webconfig = GetWebTemplate(); //使用xPath选择需要的节点 XmlNodeList nodes = webconfig.SelectNodes("" + node + "/add"); string itemkey = string.Empty; foreach (XmlNode item in nodes) { int num = item.Attributes.Count; for (int j = 0; j < num; j++) { key = item.Attributes[j].Name; value = item.Attributes[j].InnerText; dictionary.Add(key, value); if (j == 0) { itemkey = value; } } DeleteALLXmlAttributeByXPath(item.Name, str, dictionary, itemkey); //清空字典 dictionary.Clear(); }}/// <summary>/// 删除节点属性值方法/// </summary>/// <param name="name"/>标志/// <param name="xpath"/>xpath/// <param name="dictionary"/>传入字典集合/// <param name="itemkey"/>/// <returns></returns>public bool DeleteALLXmlAttributeByXPath(string name, string xpath, Dictionary<string string=""> dictionary, string ItemKey){ bool isSuccess = false; string xmlFileName = System.AppDomain.CurrentDomain.BaseDirectory + "web.config"; XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 XmlNamespaceManager xnm = new XmlNamespaceManager(xmlDoc.NameTable); xnm.AddNamespace("x", "http://schemas.microsoft.com/.NetConfiguration/v2.0"); xpath = xpath.Replace("/", "/x:"); XmlElement element = (XmlElement)xmlDoc.SelectSingleNode(xpath, xnm); bool flag = false; XmlNode item = null; for (int k = 0; k < element.ChildNodes.Count; k++) { if (element.ChildNodes[k].GetType().Name == "XmlElement") { item = element.ChildNodes[k]; foreach (XmlAttribute attribute in item.Attributes) { if (attribute.Value.ToLower() == ItemKey.ToLower() && item.Name == name) { element.ChildNodes[k].ParentNode.RemoveChild(item); flag = true; break; } else { break; } } } if (flag) { break; } } xmlDoc.Save(xmlFileName); //保存到XML文档 isSuccess = true; } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return isSuccess;}#endregion</string></string></string></string></string></string></string></string></string>