C#对XmlHelper帮助类操作Xml文档的通用方法汇总

Rayna ·

更新时间:2024-09-20

· 1851 次阅读

前言

C#XML基础入门

对象序列化为Xml

Xml字符处理

创建Xml文档

Xml数据读取

Xml插入数据

Xml修改数据

Xml删除数据

完整的XmlHelper帮助类

前言

该篇文章主要总结的是自己平时工作中使用频率比较高的Xml文档操作的一些常用方法和收集网上写的比较好的一些通用Xml文档操作的方法（主要包括Xml序列化和反序列化，Xml文件读取，Xml文档节点内容增删改的一些通过方法）。当然可能还有很多方法会漏了，假如各位同学好的方法可以在文末留言，我会统一收集起来。

C#XML基础入门

https://www.jb51.net/article/104113.htm

Xml反序列化为对象


#region Xml反序列化为对象
        /// <summary>
        /// Xml反序列化为指定模型对象
        /// </summary>
        /// <typeparam name="T">对象类型</typeparam>
        /// <param name="xmlContent">Xml内容</param>
        /// <param name="isThrowException">是否抛出异常</param>
        /// <returns></returns>
        public static T XmlConvertToModel<T>(string xmlContent, bool isThrowException = false) where T : class
        {
            StringReader stringReader = null;
            try
            {
                XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
                stringReader = new StringReader(xmlContent);
                return (T)xmlSerializer.Deserialize(stringReader);
            }
            catch (Exception ex)
                if (isThrowException)
                {
                    throw ex;
                }
                return null;
            finally
                stringReader?.Dispose();
        }
        /// <summary>     
        /// 读取Xml文件内容反序列化为指定的对象  
        /// </summary>    
        /// <param name="filePath">Xml文件的位置（绝对路径）</param>  
        /// <returns></returns>    
        public static T DeserializeFromXml<T>(string filePath)
                if (!File.Exists(filePath))
                    throw new ArgumentNullException(filePath + " not Exists");
                using (StreamReader reader = new StreamReader(filePath))
                    XmlSerializer xs = new XmlSerializer(typeof(T));
                    T ret = (T)xs.Deserialize(reader);
                    return ret;
                return default(T);
        #endregion

对象序列化为Xml

#region 对象序列化为Xml
        /// <summary>
        /// 对象序列化为Xml
        /// </summary>
        /// <param name="obj">对象</param>
        /// <param name="isThrowException">是否抛出异常</param>
        /// <returns></returns>
        public static string ObjectSerializerXml<T>(T obj, bool isThrowException = false)
        {
            if (obj == null)
            {
                return string.Empty;
            }
            try
                using (StringWriter sw = new StringWriter())
                {
                    Type t = obj.GetType();
                    //强制指定命名空间，覆盖默认的命名空间  
                    XmlSerializerNamespaces namespaces = new XmlSerializerNamespaces();
                    //在Xml序列化时去除默认命名空间xmlns:xsd和xmlns:xsi
                    namespaces.Add(string.Empty, string.Empty);
                    XmlSerializer serializer = new XmlSerializer(obj.GetType());
                    //序列化时增加namespaces
                    serializer.Serialize(sw, obj, namespaces);
                    sw.Close();
                    string replaceStr = sw.ToString().Replace(@"<?xml version=""1.0"" encoding=""utf-16""?>", "");
                    return replaceStr;
                }
            catch (Exception ex)
                if (isThrowException)
                    throw ex;
        }
        #endregion

Xml字符处理

#region Xml字符处理
        /// <summary>
        /// 特殊符号转换为转义字符
        /// </summary>
        /// <param name="xmlStr"></param>
        /// <returns></returns>
        public string XmlSpecialSymbolConvert(string xmlStr)
        {
            return xmlStr.Replace("&", "&").Replace("<", "<").Replace(">", ">").Replace("\'", "&apos;").Replace("\"", """);
        }
        #endregion

创建Xml文档

#region 创建Xml文档
        /// <summary>
        /// 创建Xml文档
        /// </summary>
        /// <param name="saveFilePath">文件保存位置</param>
        public void CreateXmlDocument(string saveFilePath)
        {
            XmlDocument xmlDoc = new XmlDocument();
            //创建类型声明节点  
            XmlNode node = xmlDoc.CreateXmlDeclaration("1.0", "utf-8", "");
            xmlDoc.AppendChild(node);
            //创建Xml根节点
            XmlNode root = xmlDoc.CreateElement("books");
            xmlDoc.AppendChild(root);
            XmlNode root1 = xmlDoc.CreateElement("book");
            root.AppendChild(root1);
            //创建子节点
            CreateNode(xmlDoc, root1, "author", "追逐时光者");
            CreateNode(xmlDoc, root1, "title", "XML学习教程");
            CreateNode(xmlDoc, root1, "publisher", "时光出版社");
            //将文件保存到指定位置
            xmlDoc.Save(saveFilePath/*"D://xmlSampleCreateFile.xml"*/);
        }
        /// <summary>    
        /// 创建节点    
        /// </summary>    
        /// <param name="xmlDoc">xml文档</param>    
        /// <param name="parentNode">Xml父节点</param>    
        /// <param name="name">节点名</param>    
        /// <param name="value">节点值</param>    
        ///   
        public void CreateNode(XmlDocument xmlDoc, XmlNode parentNode, string name, string value)
            //创建对应Xml节点元素
            XmlNode node = xmlDoc.CreateNode(XmlNodeType.Element, name, null);
            node.InnerText = value;
            parentNode.AppendChild(node);
        #endregion

Xml数据读取

#region Xml数据读取
        /// <summary>
        /// 读取Xml指定节点中的数据
        /// </summary>
        /// <param name="filePath">Xml文档路径</param>
        /// <param name="node">节点</param>
        /// <param name="attribute">读取数据的属性名</param>
        /// <returns>string</returns>
        /**************************************************
         * 使用示列:
         * XmlHelper.XmlReadNodeAttributeValue(path, "/books/book", "author")
         ************************************************/
        public static string XmlReadNodeAttributeValue(string filePath, string node, string attribute)
        {
            string value = "";
            try
            {
                XmlDocument doc = new XmlDocument();
                doc.Load(filePath);
                XmlNode xmlNode = doc.SelectSingleNode(node);
                value = (attribute.Equals("") ? xmlNode.InnerText : xmlNode.Attributes[attribute].Value);
            }
            catch { }
            return value;
        }
        /// 获得xml文件中指定节点的节点数据
        /// <param name="nodeName">节点名</param>
        /// <returns></returns>
        public static string GetNodeInfoByNodeName(string filePath, string nodeName)
            string XmlString = string.Empty;
            XmlDocument xml = new XmlDocument();
            xml.Load(filePath);
            XmlElement root = xml.DocumentElement;
            XmlNode node = root.SelectSingleNode("//" + nodeName);
            if (node != null)
                XmlString = node.InnerText;
            return XmlString;
        /// 获取某一节点的所有孩子节点的值
        /// <param name="node">要查询的节点</param>
        public string[] ReadAllChildallValue(string node, string filePath)
            int i = 0;
            string[] str = { };
            XmlDocument doc = new XmlDocument();
            doc.Load(filePath);
            XmlNode xn = doc.SelectSingleNode(node);
            XmlNodeList nodelist = xn.ChildNodes;  //得到该节点的子节点
            if (nodelist.Count > 0)
                str = new string[nodelist.Count];
                foreach (XmlElement el in nodelist)//读元素值
                {
                    str[i] = el.Value;
                    i++;
                }
            return str;
        public XmlNodeList ReadAllChild(string node, string filePath)
            return nodelist;
        #endregion

Xml插入数据

#region Xml插入数据
        /// <summary>
        /// Xml指定节点元素属性插入数据
        /// </summary>
        /// <param name="path">路径</param>
        /// <param name="node">节点</param>
        /// <param name="element">元素名</param>
        /// <param name="attribute">属性名</param>
        /// <param name="value">属性数据</param>
        /// <returns></returns>
        /**************************************************
         * 使用示列:
         * XmlHelper.XmlInsertValue(path, "/books", "book", "author", "Value")
         ************************************************/
        public static void XmlInsertValue(string path, string node, string element, string attribute, string value)
        {
            try
            {
                XmlDocument doc = new XmlDocument();
                doc.Load(path);
                XmlNode xmlNode = doc.SelectSingleNode(node);
                if (element.Equals(""))
                {
                    if (!attribute.Equals(""))
                    {
                        XmlElement xe = (XmlElement)xmlNode;
                        xe.SetAttribute(attribute, value);
                    }
                }
                else
                    XmlElement xe = doc.CreateElement(element);
                    if (attribute.Equals(""))
                        xe.InnerText = value;
                    else
                    //添加新增的节点
                    xmlNode.AppendChild(xe);
                //保存Xml文档
                doc.Save(path);
            }
            catch { }
        }
        #endregion

Xml修改数据

#region Xml修改数据
        /// <summary>
        /// Xml指定节点元素属性修改数据
        /// </summary>
        /// <param name="path">路径</param>
        /// <param name="node">节点</param>
        /// <param name="attribute">属性名</param>
        /// <param name="value">属性数据</param>
        /// <returns></returns>
        /**************************************************
         * 使用示列:
         * XmlHelper.XmlUpdateValue(path, "/books", "book","author","Value")
         ************************************************/
        public static void XmlUpdateValue(string path, string node, string attribute, string value)
        {
            try
            {
                XmlDocument doc = new XmlDocument();
                doc.Load(path);
                XmlNode xmlNode = doc.SelectSingleNode(node);
                XmlElement xmlElement = (XmlElement)xmlNode;
                if (attribute.Equals(""))
                    xmlElement.InnerText = value;
                else
                    xmlElement.SetAttribute(attribute, value);
                //保存Xml文档
                doc.Save(path);
            }
            catch { }
        }
        #endregion

Xml删除数据

#region Xml删除数据
        /// <summary>
        /// 删除数据
        /// </summary>
        /// <param name="path">路径</param>
        /// <param name="node">节点</param>
        /// <param name="attribute">属性名</param>
        /// <returns></returns>
        /**************************************************
         * 使用示列:
         * XmlHelper.XmlDelete(path, "/books", "book")
         ************************************************/
        public static void XmlDelete(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 { }
        }
        #endregion

完整的XmlHelper帮助类

注意：有些方法不能保证百分之百没有问题的，假如有问题可以留言给我，我会验证并立即修改。

/// <summary>
    /// Xml帮助类
    /// </summary>
    public class XMLHelper
    {
        #region Xml反序列化为对象
        /// <summary>
        /// Xml反序列化为指定模型对象
        /// </summary>
        /// <typeparam name="T">对象类型</typeparam>
        /// <param name="xmlContent">Xml内容</param>
        /// <param name="isThrowException">是否抛出异常</param>
        /// <returns></returns>
        public static T XmlConvertToModel<T>(string xmlContent, bool isThrowException = false) where T : class
        {
            StringReader stringReader = null;
            try
            {
                XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
                stringReader = new StringReader(xmlContent);
                return (T)xmlSerializer.Deserialize(stringReader);
            }
            catch (Exception ex)
                if (isThrowException)
                {
                    throw ex;
                }
                return null;
            finally
                stringReader?.Dispose();
        }
        /// <summary>     
        /// 读取Xml文件内容反序列化为指定的对象  
        /// </summary>    
        /// <param name="filePath">Xml文件的位置（绝对路径）</param>  
        /// <returns></returns>    
        public static T DeserializeFromXml<T>(string filePath)
                if (!File.Exists(filePath))
                    throw new ArgumentNullException(filePath + " not Exists");
                using (StreamReader reader = new StreamReader(filePath))
                    XmlSerializer xs = new XmlSerializer(typeof(T));
                    T ret = (T)xs.Deserialize(reader);
                    return ret;
                return default(T);
        #endregion
        #region 对象序列化为Xml
        /// 对象序列化为Xml
        /// <param name="obj">对象</param>
        public static string ObjectSerializerXml<T>(T obj, bool isThrowException = false)
            if (obj == null)
                return string.Empty;
                using (StringWriter sw = new StringWriter())
                    Type t = obj.GetType();
                    //强制指定命名空间，覆盖默认的命名空间  
                    XmlSerializerNamespaces namespaces = new XmlSerializerNamespaces();
                    //在Xml序列化时去除默认命名空间xmlns:xsd和xmlns:xsi
                    namespaces.Add(string.Empty, string.Empty);
                    XmlSerializer serializer = new XmlSerializer(obj.GetType());
                    //序列化时增加namespaces
                    serializer.Serialize(sw, obj, namespaces);
                    sw.Close();
                    string replaceStr = sw.ToString().Replace(@"<?xml version=""1.0"" encoding=""utf-16""?>", "");
                    return replaceStr;
        #region Xml字符处理
        /// 特殊符号转换为转义字符
        /// <param name="xmlStr"></param>
        public string XmlSpecialSymbolConvert(string xmlStr)
            return xmlStr.Replace("&", "&").Replace("<", "<").Replace(">", ">").Replace("\'", "&apos;").Replace("\"", """);
        #region 创建Xml文档
        /// 创建Xml文档
        /// <param name="saveFilePath">文件保存位置</param>
        public void CreateXmlDocument(string saveFilePath)
            XmlDocument xmlDoc = new XmlDocument();
            //创建类型声明节点  
            XmlNode node = xmlDoc.CreateXmlDeclaration("1.0", "utf-8", "");
            xmlDoc.AppendChild(node);
            //创建Xml根节点
            XmlNode root = xmlDoc.CreateElement("books");
            xmlDoc.AppendChild(root);
            XmlNode root1 = xmlDoc.CreateElement("book");
            root.AppendChild(root1);
            //创建子节点
            CreateNode(xmlDoc, root1, "author", "追逐时光者");
            CreateNode(xmlDoc, root1, "title", "XML学习教程");
            CreateNode(xmlDoc, root1, "publisher", "时光出版社");
            //将文件保存到指定位置
            xmlDoc.Save(saveFilePath/*"D://xmlSampleCreateFile.xml"*/);
        /// <summary>    
        /// 创建节点    
        /// <param name="xmlDoc">xml文档</param>    
        /// <param name="parentNode">Xml父节点</param>    
        /// <param name="name">节点名</param>    
        /// <param name="value">节点值</param>    
        ///   
        public void CreateNode(XmlDocument xmlDoc, XmlNode parentNode, string name, string value)
            //创建对应Xml节点元素
            XmlNode node = xmlDoc.CreateNode(XmlNodeType.Element, name, null);
            node.InnerText = value;
            parentNode.AppendChild(node);
        #region Xml数据读取
        /// 读取Xml指定节点中的数据
        /// <param name="filePath">Xml文档路径</param>
        /// <param name="node">节点</param>
        /// <param name="attribute">读取数据的属性名</param>
        /// <returns>string</returns>
        /**************************************************
         * 使用示列:
         * XmlHelper.XmlReadNodeAttributeValue(path, "/books/book", "author")
         ************************************************/
        public static string XmlReadNodeAttributeValue(string filePath, string node, string attribute)
            string value = "";
                XmlDocument doc = new XmlDocument();
                doc.Load(filePath);
                XmlNode xmlNode = doc.SelectSingleNode(node);
                value = (attribute.Equals("") ? xmlNode.InnerText : xmlNode.Attributes[attribute].Value);
            catch { }
            return value;
        /// 获得xml文件中指定节点的节点数据
        /// <param name="nodeName">节点名</param>
        public static string GetNodeInfoByNodeName(string filePath, string nodeName)
            string XmlString = string.Empty;
            XmlDocument xml = new XmlDocument();
            xml.Load(filePath);
            XmlElement root = xml.DocumentElement;
            XmlNode node = root.SelectSingleNode("//" + nodeName);
            if (node != null)
                XmlString = node.InnerText;
            return XmlString;
        /// 获取某一节点的所有孩子节点的值
        /// <param name="node">要查询的节点</param>
        public string[] ReadAllChildallValue(string node, string filePath)
            int i = 0;
            string[] str = { };
            XmlDocument doc = new XmlDocument();
            doc.Load(filePath);
            XmlNode xn = doc.SelectSingleNode(node);
            XmlNodeList nodelist = xn.ChildNodes;  //得到该节点的子节点
            if (nodelist.Count > 0)
                str = new string[nodelist.Count];
                foreach (XmlElement el in nodelist)//读元素值
                    str[i] = el.Value;
                    i++;
            return str;
        public XmlNodeList ReadAllChild(string node, string filePath)
            return nodelist;
        #region Xml插入数据
        /// Xml指定节点元素属性插入数据
        /// <param name="path">路径</param>
        /// <param name="element">元素名</param>
        /// <param name="attribute">属性名</param>
        /// <param name="value">属性数据</param>
         * XmlHelper.XmlInsertValue(path, "/books", "book", "author", "Value")
        public static void XmlInsertValue(string path, string node, string element, string attribute, string value)
                doc.Load(path);
                if (element.Equals(""))
                    if (!attribute.Equals(""))
                    {
                        XmlElement xe = (XmlElement)xmlNode;
                        xe.SetAttribute(attribute, value);
                    }
                else
                    XmlElement xe = doc.CreateElement(element);
                    if (attribute.Equals(""))
                        xe.InnerText = value;
                    else
                    //添加新增的节点
                    xmlNode.AppendChild(xe);
                //保存Xml文档
                doc.Save(path);
        #region Xml修改数据
        /// Xml指定节点元素属性修改数据
         * XmlHelper.XmlUpdateValue(path, "/books", "book","author","Value")
        public static void XmlUpdateValue(string path, string node, string attribute, string value)
                XmlElement xmlElement = (XmlElement)xmlNode;
                if (attribute.Equals(""))
                    xmlElement.InnerText = value;
                    xmlElement.SetAttribute(attribute, value);
        #region Xml删除数据
        /// 删除数据
         * XmlHelper.XmlDelete(path, "/books", "book")
        public static void XmlDelete(string path, string node, string attribute)
                XmlNode xn = doc.SelectSingleNode(node);
                XmlElement xe = (XmlElement)xn;
                    xn.ParentNode.RemoveChild(xn);
                    xe.RemoveAttribute(attribute);
    }

到此这篇关于C#XmlHelper帮助类操作Xml文档的通用方法汇总的文章就介绍到这了,更多相关C#XmlHelper帮助类内容请搜索软件开发网以前的文章或继续浏览下面的相关文章希望大家以后多多支持软件开发网！

C# 方法方法汇总通用

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