flowMeter/NGToolsPC/XMLHelper.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;

namespace NGToolsPC
{
    
        /// <summary>
        /// XMLHelper XML文档操作管理器
        /// </summary>
        public class XMLHelper
        {
            public XMLHelper()
            {
                //
                // TODO: 在此处添加构造函数逻辑
                //
            }


            #region XML文档节点查询和读取
            /// <summary>
            /// 选择匹配XPath表达式的第一个节点XmlNode.
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名")</param>
            /// <returns>返回XmlNode</returns>
            public static XmlNode GetXmlNodeByXpath(string xmlFileName, string xpath)
            {
                XmlDocument xmlDoc = new XmlDocument();
                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                    XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath);
                    return xmlNode;
                }
                catch (Exception ex)
                {
                    return null;
                    //throw ex; //这里可以定义你自己的异常处理
                }
            }

            /// <summary>
            /// 选择匹配XPath表达式的节点列表XmlNodeList.
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名")</param>
            /// <returns>返回XmlNodeList</returns>
            public static XmlNodeList GetXmlNodeListByXpath(string xmlFileName, string xpath)
            {
                XmlDocument xmlDoc = new XmlDocument();

                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                    XmlNodeList xmlNodeList = xmlDoc.SelectNodes(xpath);
                    return xmlNodeList;
                }
                catch (Exception ex)
                {
                    return null;
                    //throw ex; //这里可以定义你自己的异常处理
                }
            }

            /// <summary>
            /// 选择匹配XPath表达式的第一个节点的匹配xmlAttributeName的属性XmlAttribute.
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param>
            /// <param name="xmlAttributeName">要匹配xmlAttributeName的属性名称</param>
            /// <returns>返回xmlAttributeName</returns>
            public static XmlAttribute GetXmlAttribute(string xmlFileName, string xpath, string xmlAttributeName)
            {
                string content = string.Empty;
                XmlDocument xmlDoc = new XmlDocument();
                XmlAttribute xmlAttribute = null;
                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                    XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath);
                    if (xmlNode != null)
                    {
                        if (xmlNode.Attributes.Count > 0)
                        {
                            xmlAttribute = xmlNode.Attributes[xmlAttributeName];
                        }
                    }
                }
                catch (Exception ex)
                {
                    throw ex; //这里可以定义你自己的异常处理
                }
                return xmlAttribute;
            }
            /// <summary>
            /// 选择匹配XPath表达式的第一个节点的匹配xmlAttributeName的属性XmlAttribute.
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param>
            /// <param name="name">要匹配xmlAttributeName的属性的子节点名称</param>
            /// <param name="xmlAttributeName">要匹配xmlAttributeName的属性名称</param>
            /// <param name="xmlAttributeValues">要匹配xmlAttributeName的属性值</param>
            /// <returns>返回xmlAttributeName的属性的子节点名称InnerText</returns>
            public static string GetXmlByAttribute(string xmlFileName, string xpath, string name, string xmlAttributeName, string xmlAttributeValues)
            {
                string content = string.Empty;
                XmlDocument xmlDoc = new XmlDocument();
                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                                              //主要
                    XmlNodeList xlist = xmlDoc.SelectNodes(xpath);
                    XmlNode xmlNode = xlist.Cast<XmlNode>().Where(o => o.Attributes.Cast<XmlAttribute>().FirstOrDefault(a => a.Name == xmlAttributeName && a.Value == xmlAttributeValues) != null).FirstOrDefault();

                    //XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath);
                    if (xmlNode != null)
                    {
                        foreach (XmlNode node in xmlNode.ChildNodes)
                        {
                            if (node.Name.ToLower() == name.ToLower())
                            {
                                //存在此节点则返回InnerText
                                content = node.InnerText;
                                break;
                            }
                        }
                    }
                }
                catch (Exception ex)
                {
                    throw ex; //这里可以定义你自己的异常处理
                }
                return content;
            }
            /// <summary>
            /// 选择匹配XPath表达式的第一个节点的匹配xmlAttributeName的属性XmlAttribute.
            /// </summary>
            /// <param name="xmlFileName"></param>
            /// <param name="xpath"></param>
            /// <param name="xmlAttributeName">要匹配xmlAttributeName的属性名称</param>
            /// <param name="xmlAttributeValues">要匹配xmlAttributeName的属性值</param>
            /// <returns>返回节点InnerText</returns>
            public static string GetXmlByAttribute(string xmlFileName, string xpath, string xmlAttributeName, string xmlAttributeValues)
            {
                string content = string.Empty;
                XmlDocument xmlDoc = new XmlDocument();
                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                                              //主要
                    XmlNodeList xlist = xmlDoc.SelectNodes(xpath);
                    XmlNode xmlNode = xlist.Cast<XmlNode>().Where(o => o.Attributes.Cast<XmlAttribute>().FirstOrDefault(a => a.Name == xmlAttributeName && a.Value == xmlAttributeValues) != null).FirstOrDefault();

                    //XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath);
                    if (xmlNode != null)
                    {
                        content = xmlNode.InnerText;
                    }
                }
                catch (Exception ex)
                {
                    throw ex; //这里可以定义你自己的异常处理
                }
                return content;
            }
            #endregion

            #region XML文档创建和节点或属性的添加、修改
            /// <summary>
            /// 创建一个XML文档
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="rootNodeName">XML文档根节点名称(须指定一个根节点名称)</param>
            /// <param name="version">XML文档版本号(必须为:"1.0")</param>
            /// <param name="encoding">XML文档编码方式</param>
            /// <param name="standalone">该值必须是"yes"或"no",如果为null,Save方法不在XML声明上写出独立属性</param>
            /// <returns>成功返回true,失败返回false</returns>
            public static bool CreateXmlDocument(string xmlFileName, string rootNodeName, string version, string encoding, string standalone)
            {
                bool isSuccess = false;
                try
                {
                    XmlDocument xmlDoc = new XmlDocument();
                    XmlDeclaration xmlDeclaration = xmlDoc.CreateXmlDeclaration(version, encoding, standalone);
                    XmlNode root = xmlDoc.CreateElement(rootNodeName);
                    xmlDoc.AppendChild(xmlDeclaration);
                    xmlDoc.AppendChild(root);
                    xmlDoc.Save(xmlFileName);
                    isSuccess = true;
                }
                catch (Exception ex)
                {
                    throw ex; //这里可以定义你自己的异常处理
                }
                return isSuccess;
            }

            /// <summary>
            /// 依据匹配XPath表达式的第一个节点来创建它的子节点(如果此节点已存在则追加一个新的同名节点
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param>
            /// <param name="xmlNodeName">要匹配xmlNodeName的节点名称</param>
            /// <param name="innerText">节点文本值</param>
            /// <param name="xmlAttributeName">要匹配xmlAttributeName的属性名称</param>
            /// <param name="value">属性值</param>
            /// <returns>成功返回true,失败返回false</returns>
            public static bool CreateXmlNodeByXPath(string xmlFileName, string xpath, string xmlNodeName, string innerText, string xmlAttributeName, string value)
            {
                bool isSuccess = false;
                XmlDocument xmlDoc = new XmlDocument();
                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                    XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath);
                    if (xmlNode != null)
                    {
                        //存不存在此节点都创建
                        XmlElement subElement = xmlDoc.CreateElement(xmlNodeName);
                        subElement.InnerXml = innerText;

                        //如果属性和值参数都不为空则在此新节点上新增属性
                        if (!string.IsNullOrEmpty(xmlAttributeName) && !string.IsNullOrEmpty(value))
                        {
                            XmlAttribute xmlAttribute = xmlDoc.CreateAttribute(xmlAttributeName);
                            xmlAttribute.Value = value;
                            subElement.Attributes.Append(xmlAttribute);
                        }

                        xmlNode.AppendChild(subElement);
                    }
                    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;
            }

            /// <summary>
            /// 依据匹配XPath表达式的第一个节点来创建或更新它的子节点(如果节点存在则更新,不存在则创建)
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param>
            /// <param name="xmlNodeName">要匹配xmlNodeName的节点名称</param>
            /// <param name="innerText">节点文本值</param>
            /// <returns>成功返回true,失败返回false</returns>
            public static bool CreateOrUpdateXmlNodeByXPath(string xmlFileName, string xpath, string xmlNodeName, string innerText)
            {
                bool isSuccess = false;
                bool isExistsNode = false;//标识节点是否存在
                XmlDocument xmlDoc = new XmlDocument();
                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                                              //XmlNodeList xlist = xmlDoc.SelectNodes(xpath);
                                              //XmlNode xmlNode = xlist.Cast<XmlNode>().Where(o => o.InnerText == innerText).FirstOrDefault();
                    XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath);
                    if (xmlNode != null)
                    {
                        //遍历xpath节点下的所有子节点
                        foreach (XmlNode node in xmlNode.ChildNodes)
                        {
                            //XmlAttribute att = node.Attributes.Cast<XmlAttribute>().Where(o => o.Name == innerText).FirstOrDefault();
                            if (node.Name.ToLower() == xmlNodeName.ToLower())
                            {
                                //存在此节点则更新
                                node.InnerXml = innerText;
                                isExistsNode = true;
                                break;
                            }
                        }
                        if (!isExistsNode)
                        {
                            //不存在此节点则创建
                            XmlElement subElement = xmlDoc.CreateElement(xmlNodeName);
                            subElement.InnerXml = innerText;
                            xmlNode.AppendChild(subElement);
                        }
                    }
                    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;
            }

            /// <summary>
            /// 依据匹配XPath表达式的第一个节点来创建或更新它的子节点(如果节点存在则更新,不存在则创建)
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param>
            /// <param name="xmlNodeName">要匹配xmlNodeName的节点名称</param>
            /// <param name="innerText">节点文本值</param>
            /// <returns>成功返回true,失败返回false</returns>
            public static bool CreateOrUpdateXmlNodeByXPath(string xmlFileName, string xpath, string xmlNodeName, string innerText, string XmlAttributeName, string XmlAttributeValues)
            {
                bool isSuccess = false;
                bool isExistsNode = false;//标识节点是否存在
                XmlDocument xmlDoc = new XmlDocument();
                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                    XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath);
                    if (xmlNode != null)
                    {
                        //遍历xpath节点下的所有子节点
                        foreach (XmlNode node in xmlNode.ChildNodes)
                        {
                            XmlAttribute att = node.Attributes.Cast<XmlAttribute>().Where(o => o.Name == XmlAttributeName && o.Value == XmlAttributeValues).FirstOrDefault();
                            if (att != null && node.Name.ToLower() == xmlNodeName.ToLower())
                            {
                                //存在此节点则更新
                                node.InnerXml = innerText;
                                isExistsNode = true;
                                #region      //遍历xpath节点中的所有属性
                                bool isExistsAttribute = false;
                                foreach (XmlAttribute attribute in node.Attributes)
                                {
                                    if (attribute.Name.ToLower() == XmlAttributeName.ToLower())
                                    {
                                        //节点中存在此属性则更新
                                        attribute.Value = XmlAttributeValues;
                                        isExistsAttribute = true;
                                        break;
                                    }
                                }
                                if (!isExistsAttribute)
                                {
                                    //节点中不存在此属性则创建
                                    XmlAttribute xmlAttribute = xmlDoc.CreateAttribute(XmlAttributeName);
                                    xmlAttribute.Value = XmlAttributeValues;
                                    node.Attributes.Append(xmlAttribute);
                                }
                                #endregion
                                break;
                            }
                        }
                        if (!isExistsNode)
                        {
                            //不存在此节点则创建
                            XmlElement subElement = xmlDoc.CreateElement(xmlNodeName);
                            subElement.InnerXml = innerText;

                            XmlAttribute xmlAttribute = xmlDoc.CreateAttribute(XmlAttributeName);
                            xmlAttribute.Value = XmlAttributeValues;
                            subElement.Attributes.Append(xmlAttribute);
                            xmlNode.AppendChild(subElement);
                        }
                    }
                    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;
            }

            /// <summary>
            /// 依据匹配XPath表达式的第一个节点来创建或更新它的子节点(如果节点存在则更新,不存在则创建)
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param>
            /// <param name="xmlNodeName">要匹配xmlNodeName的节点名称</param>
            /// <param name="innerText">节点文本值</param>
            /// <param name="parentinnerText">指定父节点文本值</param>
            /// <returns>成功返回true,失败返回false</returns>
            public static bool CreateOrUpdateXmlNodeByXPath(string xmlFileName, string xpath, string xmlNodeName, string innerText, string parentAttributevalues)
            {
                bool isSuccess = false;
                bool isExistsNode = false;//标识节点是否存在
                XmlDocument xmlDoc = new XmlDocument();
                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                    XmlNodeList xlist = xmlDoc.SelectNodes(xpath);
                    //主要
                    XmlNode xmlNode = xlist.Cast<XmlNode>().Where(o => o.Attributes.Cast<XmlAttribute>().FirstOrDefault(a => a.Name == "Name" && a.Value == parentAttributevalues) != null).FirstOrDefault();
                    //XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath);
                    if (xmlNode != null)
                    {
                        //遍历xpath节点下的所有子节点
                        foreach (XmlNode node in xmlNode.ChildNodes)
                        {
                            if (node.Name.ToLower() == xmlNodeName.ToLower())
                            {
                                //存在此节点则更新
                                node.InnerXml = innerText;
                                isExistsNode = true;
                                break;
                            }
                        }
                        if (!isExistsNode)
                        {
                            //不存在此节点则创建
                            XmlElement subElement = xmlDoc.CreateElement(xmlNodeName);
                            subElement.InnerXml = innerText;
                            xmlNode.AppendChild(subElement);
                        }
                    }
                    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;
            }

            /// <summary>
            /// 依据匹配XPath表达式的第一个节点来创建或更新它的属性(如果属性存在则更新,不存在则创建)
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param>
            /// <param name="xmlAttributeName">要匹配xmlAttributeName的属性名称</param>
            /// <param name="value">属性值</param>
            /// <returns>成功返回true,失败返回false</returns>
            public static bool CreateOrUpdateXmlAttributeByXPath(string xmlFileName, string xpath, string xmlAttributeName, string value)
            {
                bool isSuccess = false;
                bool isExistsAttribute = false;//标识属性是否存在
                XmlDocument xmlDoc = new XmlDocument();
                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                    XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath);
                    if (xmlNode != null)
                    {
                        //遍历xpath节点中的所有属性
                        foreach (XmlAttribute attribute in xmlNode.Attributes)
                        {
                            if (attribute.Name.ToLower() == xmlAttributeName.ToLower())
                            {
                                //节点中存在此属性则更新
                                attribute.Value = value;
                                isExistsAttribute = true;
                                break;
                            }
                        }
                        if (!isExistsAttribute)
                        {
                            //节点中不存在此属性则创建
                            XmlAttribute xmlAttribute = xmlDoc.CreateAttribute(xmlAttributeName);
                            xmlAttribute.Value = value;
                            xmlNode.Attributes.Append(xmlAttribute);
                        }
                    }
                    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

            #region XML文档节点或属性的删除
            /// <summary>
            /// 删除匹配XPath表达式的第一个节点(节点中的子元素同时会被删除)
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param>
            /// <returns>成功返回true,失败返回false</returns>
            public static bool DeleteXmlNodeByXPath(string xmlFileName, string xpath)
            {
                bool isSuccess = false;
                XmlDocument xmlDoc = new XmlDocument();
                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                    XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath);
                    if (xmlNode != null)
                    {
                        //删除节点
                        xmlNode.ParentNode.RemoveChild(xmlNode);
                    }
                    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;
            }

            /// <summary>
            /// 删除匹配XPath表达式的第一个节点中的匹配参数xmlAttributeName的属性
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param>
            /// <param name="xmlAttributeName">要删除的xmlAttributeName的属性名称</param>
            /// <returns>成功返回true,失败返回false</returns>
            public static bool DeleteXmlAttributeByXPath(string xmlFileName, string xpath, string xmlAttributeName)
            {
                bool isSuccess = false;
                bool isExistsAttribute = false;
                XmlDocument xmlDoc = new XmlDocument();
                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                    XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath);
                    XmlAttribute xmlAttribute = null;
                    if (xmlNode != null)
                    {
                        //遍历xpath节点中的所有属性
                        foreach (XmlAttribute attribute in xmlNode.Attributes)
                        {
                            if (attribute.Name.ToLower() == xmlAttributeName.ToLower())
                            {
                                //节点中存在此属性
                                xmlAttribute = attribute;
                                isExistsAttribute = true;
                                break;
                            }
                        }
                        if (isExistsAttribute)
                        {
                            //删除节点中的属性
                            xmlNode.Attributes.Remove(xmlAttribute);
                        }
                    }
                    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;
            }

            /// <summary>
            /// 删除匹配XPath表达式的第一个节点中的所有属性
            /// </summary>
            /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param>
            /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param>
            /// <returns>成功返回true,失败返回false</returns>
            public static bool DeleteAllXmlAttributeByXPath(string xmlFileName, string xpath)
            {
                bool isSuccess = false;
                XmlDocument xmlDoc = new XmlDocument();
                try
                {
                    xmlDoc.Load(xmlFileName); //加载XML文档
                    XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath);
                    if (xmlNode != null)
                    {
                        //遍历xpath节点中的所有属性
                        xmlNode.Attributes.RemoveAll();
                    }
                    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

}
}