C# XML操作類_ZenDei技術網路在線

using System.Xml; using System.Data; namespace DotNet.Utilities { /// <summary> /// Xml的操作公共類 /// </summary> public class XmlHelper { #region 欄位定義 /// ...

using System.Xml;
using System.Data;

namespace DotNet.Utilities
{
    /// <summary>
    /// Xml的操作公共類
    /// </summary>    
    public class XmlHelper
    {
        #region 欄位定義
        /// <summary>
        /// XML文件的物理路徑
        /// </summary>
        private string _filePath = string.Empty;
        /// <summary>
        /// Xml文檔
        /// </summary>
        private XmlDocument _xml;
        /// <summary>
        /// XML的根節點
        /// </summary>
        private XmlElement _element;
        #endregion

        #region 構造方法
        /// <summary>
        /// 實例化XmlHelper對象
        /// </summary>
        /// <param name="xmlFilePath">Xml文件的相對路徑</param>
        public XmlHelper(string xmlFilePath)
        {
            //獲取XML文件的絕對路徑
            _filePath = SysHelper.GetPath(xmlFilePath);
        }
        #endregion

        #region 創建XML的根節點
        /// <summary>
        /// 創建XML的根節點
        /// </summary>
        private void CreateXMLElement()
        {

            //創建一個XML對象
            _xml = new XmlDocument();

            if (DirFile.IsExistFile(_filePath))
            {
                //載入XML文件
                _xml.Load(this._filePath);
            }

            //為XML的根節點賦值
            _element = _xml.DocumentElement;
        }
        #endregion

        #region 獲取指定XPath表達式的節點對象
        /// <summary>
        /// 獲取指定XPath表達式的節點對象
        /// </summary>        
        /// <param name="xPath">XPath表達式,
        /// 範例1: @"Skill/First/SkillItem", 等效於 @"//Skill/First/SkillItem"
        /// 範例2: @"Table[USERNAME='a']" , []表示篩選,USERNAME是Table下的一個子節點.
        /// 範例3: @"ApplyPost/Item[@itemName='崗位編號']",@itemName是Item節點的屬性.
        /// </param>
        public XmlNode GetNode(string xPath)
        {
            //創建XML的根節點
            CreateXMLElement();

            //返回XPath節點
            return _element.SelectSingleNode(xPath);
        }
        #endregion

        #region 獲取指定XPath表達式節點的值
        /// <summary>
        /// 獲取指定XPath表達式節點的值
        /// </summary>
        /// <param name="xPath">XPath表達式,
        /// 範例1: @"Skill/First/SkillItem", 等效於 @"//Skill/First/SkillItem"
        /// 範例2: @"Table[USERNAME='a']" , []表示篩選,USERNAME是Table下的一個子節點.
        /// 範例3: @"ApplyPost/Item[@itemName='崗位編號']",@itemName是Item節點的屬性.
        /// </param>
        public string GetValue(string xPath)
        {
            //創建XML的根節點
            CreateXMLElement();

            //返回XPath節點的值
            return _element.SelectSingleNode(xPath).InnerText;
        }
        #endregion

        #region 獲取指定XPath表達式節點的屬性值
        /// <summary>
        /// 獲取指定XPath表達式節點的屬性值
        /// </summary>
        /// <param name="xPath">XPath表達式,
        /// 範例1: @"Skill/First/SkillItem", 等效於 @"//Skill/First/SkillItem"
        /// 範例2: @"Table[USERNAME='a']" , []表示篩選,USERNAME是Table下的一個子節點.
        /// 範例3: @"ApplyPost/Item[@itemName='崗位編號']",@itemName是Item節點的屬性.
        /// </param>
        /// <param name="attributeName">屬性名</param>
        public string GetAttributeValue(string xPath, string attributeName)
        {
            //創建XML的根節點
            CreateXMLElement();

            //返回XPath節點的屬性值
            return _element.SelectSingleNode(xPath).Attributes[attributeName].Value;
        }
        #endregion

        #region 新增節點
        /// <summary>
        /// 1. 功能：新增節點。
        /// 2. 使用條件：將任意節點插入到當前Xml文件中。
        /// </summary>        
        /// <param name="xmlNode">要插入的Xml節點</param>
        public void AppendNode(XmlNode xmlNode)
        {
            //創建XML的根節點
            CreateXMLElement();

            //導入節點
            XmlNode node = _xml.ImportNode(xmlNode, true);

            //將節點插入到根節點下
            _element.AppendChild(node);
        }

        /// <summary>
        /// 1. 功能：新增節點。
        /// 2. 使用條件：將DataSet中的第一條記錄插入Xml文件中。
        /// </summary>        
        /// <param name="ds">DataSet的實例，該DataSet中應該只有一條記錄</param>
        public void AppendNode(DataSet ds)
        {
            //創建XmlDataDocument對象
            XmlDataDocument xmlDataDocument = new XmlDataDocument(ds);

            //導入節點
            XmlNode node = xmlDataDocument.DocumentElement.FirstChild;

            //將節點插入到根節點下
            AppendNode(node);
        }
        #endregion

        #region 刪除節點
        /// <summary>
        /// 刪除指定XPath表達式的節點
        /// </summary>        
        /// <param name="xPath">XPath表達式,
        /// 範例1: @"Skill/First/SkillItem", 等效於 @"//Skill/First/SkillItem"
        /// 範例2: @"Table[USERNAME='a']" , []表示篩選,USERNAME是Table下的一個子節點.
        /// 範例3: @"ApplyPost/Item[@itemName='崗位編號']",@itemName是Item節點的屬性.
        /// </param>
        public void RemoveNode(string xPath)
        {
            //創建XML的根節點
            CreateXMLElement();

            //獲取要刪除的節點
            XmlNode node = _xml.SelectSingleNode(xPath);

            //刪除節點
            _element.RemoveChild(node);
        }
        #endregion //刪除節點

        #region 保存XML文件
        /// <summary>
        /// 保存XML文件
        /// </summary>        
        public void Save()
        {
            //創建XML的根節點
            CreateXMLElement();

            //保存XML文件
            _xml.Save(this._filePath);
        }
        #endregion //保存XML文件

        #region 靜態方法

        #region 創建根節點對象
        /// <summary>
        /// 創建根節點對象
        /// </summary>
        /// <param name="xmlFilePath">Xml文件的相對路徑</param>        
        private static XmlElement CreateRootElement(string xmlFilePath)
        {
            //定義變數，表示XML文件的絕對路徑
            string filePath = "";

            //獲取XML文件的絕對路徑
            filePath = SysHelper.GetPath(xmlFilePath);

            //創建XmlDocument對象
            XmlDocument xmlDocument = new XmlDocument();
            //載入XML文件
            xmlDocument.Load(filePath);

            //返回根節點
            return xmlDocument.DocumentElement;
        }
        #endregion

        #region 獲取指定XPath表達式節點的值
        /// <summary>
        /// 獲取指定XPath表達式節點的值
        /// </summary>
        /// <param name="xmlFilePath">Xml文件的相對路徑</param>
        /// <param name="xPath">XPath表達式,
        /// 範例1: @"Skill/First/SkillItem", 等效於 @"//Skill/First/SkillItem"
        /// 範例2: @"Table[USERNAME='a']" , []表示篩選,USERNAME是Table下的一個子節點.
        /// 範例3: @"ApplyPost/Item[@itemName='崗位編號']",@itemName是Item節點的屬性.
        /// </param>
        public static string GetValue(string xmlFilePath, string xPath)
        {
            //創建根對象
            XmlElement rootElement = CreateRootElement(xmlFilePath);

            //返回XPath節點的值
            return rootElement.SelectSingleNode(xPath).InnerText;
        }
        #endregion

        #region 獲取指定XPath表達式節點的屬性值
        /// <summary>
        /// 獲取指定XPath表達式節點的屬性值
        /// </summary>
        /// <param name="xmlFilePath">Xml文件的相對路徑</param>
        /// <param name="xPath">XPath表達式,
        /// 範例1: @"Skill/First/SkillItem", 等效於 @"//Skill/First/SkillItem"
        /// 範例2: @"Table[USERNAME='a']" , []表示篩選,USERNAME是Table下的一個子節點.
        /// 範例3: @"ApplyPost/Item[@itemName='崗位編號']",@itemName是Item節點的屬性.
        /// </param>
        /// <param name="attributeName">屬性名</param>
        public static string GetAttributeValue(string xmlFilePath, string xPath, string attributeName)
        {
            //創建根對象
            XmlElement rootElement = CreateRootElement(xmlFilePath);

            //返回XPath節點的屬性值
            return rootElement.SelectSingleNode(xPath).Attributes[attributeName].Value;
        }
        #endregion

        #endregion

        public static void SetValue(string xmlFilePath, string xPath, string newtext)
        {
            //string path = SysHelper.GetPath(xmlFilePath);
            //var queryXML = from xmlLog in xelem.Descendants("msg_log")
            //               //所有名字為Bin的記錄
            //               where xmlLog.Element("user").Value == "Bin"
            //               select xmlLog;

            //foreach (XElement el in queryXML)
            //{
            //    el.Element("user").Value = "LiuBin";//開始修改
            //}
            //xelem.Save(path);
        }
    }
}

XmlHelper

using System;
using System.Data;
using System.IO;
using System.Xml;

namespace DotNet.Utilities
{
    public class XMLProcess
    {
        #region 構造函數
        public XMLProcess()
        { }

        public XMLProcess(string strPath)
        {
            this._XMLPath = strPath;
        }
        #endregion

        #region 公有屬性
        private string _XMLPath;
        public string XMLPath
        {
            get { return this._XMLPath; }
        }
        #endregion

        #region 私有方法
        /// <summary>
        /// 導入XML文件
        /// </summary>
        /// <param name="XMLPath">XML文件路徑</param>
        private XmlDocument XMLLoad()
        {
            string XMLFile = XMLPath;
            XmlDocument xmldoc = new XmlDocument();
            try
            {
                string filename = AppDomain.CurrentDomain.BaseDirectory.ToString() + XMLFile;
                if (File.Exists(filename)) xmldoc.Load(filename);
            }
            catch (Exception e)
            { }
            return xmldoc;
        }

        /// <summary>
        /// 導入XML文件
        /// </summary>
        /// <param name="XMLPath">XML文件路徑</param>
        private static XmlDocument XMLLoad(string strPath)
        {
            XmlDocument xmldoc = new XmlDocument();
            try
            {
                string filename = AppDomain.CurrentDomain.BaseDirectory.ToString() + strPath;
                if (File.Exists(filename)) xmldoc.Load(filename);
            }
            catch (Exception e)
            { }
            return xmldoc;
        }

        /// <summary>
        /// 返回完整路徑
        /// </summary>
        /// <param name="strPath">Xml的路徑</param>
        private static string GetXmlFullPath(string strPath)
        {
            if (strPath.IndexOf(":") > 0)
            {
                return strPath;
            }
            else
            {
                return System.Web.HttpContext.Current.Server.MapPath(strPath);
            }
        }
        #endregion

        #region 讀取數據
        /// <summary>
        /// 讀取指定節點的數據
        /// </summary>
        /// <param name="node">節點</param>
        /// 使用示列:
        /// XMLProsess.Read("/Node", "")
        /// XMLProsess.Read("/Node/Element[@Attribute='Name']")
        public string Read(string node)
        {
            string value = "";
            try
            {
                XmlDocument doc = XMLLoad();
                XmlNode xn = doc.SelectSingleNode(node);
                value = xn.InnerText;
            }
            catch { }
            return value;
        }

        /// <summary>
        /// 讀取指定路徑和節點的串聯值
        /// </summary>
        /// <param name="path">路徑</param>
        /// <param name="node">節點</param>
        /// <param name="attribute">屬性名，非空時返回該屬性值，否則返回串聯值</param>
        /// 使用示列:
        /// XMLProsess.Read(path, "/Node", "")
        /// XMLProsess.Read(path, "/Node/Element[@Attribute='Name']")
        public static string Read(string path, string node)
        {
            string value = "";
            try
            {
                XmlDocument doc = XMLLoad(path);
                XmlNode xn = doc.SelectSingleNode(node);
                value = xn.InnerText;
            }
            catch { }
            return value;
        }

        /// <summary>
        /// 讀取指定路徑和節點的屬性值
        /// </summary>
        /// <param name="path">路徑</param>
        /// <param name="node">節點</param>
        /// <param name="attribute">屬性名，非空時返回該屬性值，否則返回串聯值</param>
        /// 使用示列:
        /// XMLProsess.Read(path, "/Node", "")
        /// XMLProsess.Read(path, "/Node/Element[@Attribute='Name']", "Attribute")
        public static string Read(string path, string node, string attribute)
        {
            string value = "";
            try
            {
                XmlDocument doc = XMLLoad(path);
                XmlNode xn = doc.SelectSingleNode(node);
                value = (attribute.Equals("") ? xn.InnerText : xn.Attributes[attribute].Value);
            }
            catch { }
            return value;
        }

        /// <summary>
        /// 獲取某一節點的所有孩子節點的值
        /// </summary>
        /// <param name="node">要查詢的節點</param>
        public string[] ReadAllChildallValue(string node)
        {
            int i = 0;
            string[] str = { };
            XmlDocument doc = XMLLoad();
            XmlNode xn = doc.SelectSingleNode(node);
            XmlNodeList nodelist = xn.ChildNodes;  //得到該節點的子節點
            if (nodelist.Count > 0)
            {
                str = new string[nodelist.Count];
                foreach (XmlElement el in nodelist)//讀元素值
                {
                    str[i] = el.Value;
                    i++;
                }
            }
            return str;
        }

        /// <summary>
        /// 獲取某一節點的所有孩子節點的值
        /// </summary>
        /// <param name="node">要查詢的節點</param>
        public XmlNodeList ReadAllChild(string node)
        {
            XmlDocument doc = XMLLoad();
            XmlNode xn = doc.SelectSingleNode(node);
            XmlNodeList nodelist = xn.ChildNodes;  //得到該節點的子節點
            return nodelist;
        }

        /// <summary> 
        /// 讀取XML返回經排序或篩選後的DataView
        /// </summary>
        /// <param name="strWhere">篩選條件，如:"name='kgdiwss'"</param>
        /// <param name="strSort"> 排序條件，如:"Id desc"</param>
        public DataView GetDataViewByXml(string strWhere, string strSort)
        {
            try
            {
                string XMLFile = this.XMLPath;
                string filename = AppDomain.CurrentDomain.BaseDirectory.ToString() + XMLFile;
                DataSet ds = new DataSet();
                ds.ReadXml(filename);
                DataView dv = new DataView(ds.Tables[0]); //創建DataView來完成排序或篩選操作    
                if (strSort != null)
                {
                    dv.Sort = strSort; //對DataView中的記錄進行排序
                }
                if (strWhere != null)
                {
                    dv.RowFilter = strWhere; //對DataView中的記錄進行篩選，找到我們想要的記錄
                }
                return dv;
            }
            catch (Exception)
            {
                return null;
            }
        }

        /// <summary>
        /// 讀取XML返回DataSet
        /// </summary>
        /// <param name="strXmlPath">XML文件相對路徑</param>
        public DataSet GetDataSetByXml(string strXmlPath)
        {
            try
            {
                DataSet ds = new DataSet();
                ds.ReadXml(GetXmlFullPath(strXmlPath));
                if (ds.Tables.Count > 0)
                {
                    return ds;
                }
                return null;
            }
            catch (Exception)
            {
                return null;
            }
        }
        #endregion

        #region 插入數據
        /// <summary>
        /// 插入數據
        /// </summary>
        /// <param name="path">路徑</param>
        /// <param name="node">節點</param>
        /// <param name="element">元素名，非空時插入新元素，否則在該元素中插入屬性</param>
        /// <param name="attribute">屬性名，非空時插入該元素屬性值，否則插入元素值</param>
        /// <param name="value">值</param>
        /// 使用示列:
        /// XMLProsess.Insert(path, "/Node", "Element", "", "Value")
        /// XMLProsess.Insert(path, "/Node", "Element", "Attribute", "Value")
        /// XMLProsess.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(AppDomain.CurrentDomain.BaseDirectory.ToString() + 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(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
            }
            catch { }
        }

        /// <summary>
        /// 插入數據
        /// </summary>
        /// <param name="path">路徑</param>
        /// <param name="node">節點</param>
        /// <param name="element">元素名，非空時插入新元素，否則在該元素中插入屬性</param>
        /// <param name="strList">由XML屬性名和值組成的二維數組</param>
        public static void Insert(string path, string node, string element, string[][] strList)
        {
            try
            {
                XmlDocument doc = new XmlDocument();
                doc.Load(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
                XmlNode xn = doc.SelectSingleNode(node);
                XmlElement xe = doc.CreateElement(element);
                string strAttribute = "";
                string strValue = "";
                for (int i = 0; i < strList.Length; i++)
                {
                    for (int j = 0; j < strList[i].Length; j++)
                    {
                        if (j == 0)
                            strAttribute = strList[i][j];
                        else
                            strValue = strList[i][j];
                    }
                    if (strAttribute.Equals(""))
                        xe.InnerText = strValue;
                    else
                        xe.SetAttribute(strAttribute, strValue);
                }
                xn.AppendChild(xe);
                doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
            }
            catch { }
        }

        /// <summary>
        /// 插入一行數據
        /// </summary>
        /// <param name="strXmlPath">XML文件相對路徑</param>
        /// <param name="Columns">要插入行的列名數組，如：string[] Columns = {"name","IsMarried"};</param>
        /// <param name="ColumnValue">要插入行每列的值數組，如：string[] ColumnValue={"XML大全","false"};</param>
        /// <returns>成功返回true,否則返回false</returns>
        public static bool WriteXmlByDataSet(string strXmlPath, string[] Columns, string[] ColumnValue)
        {
            try
            {
                //根據傳入的XML路徑得到.XSD的路徑，兩個文件放在同一個目錄下
                string strXsdPath = strXmlPath.Substring(0, strXmlPath.IndexOf(".")) + ".xsd";
                DataSet ds = new DataSet();
                ds.ReadXmlSchema(GetXmlFullPath(strXsdPath)); //讀XML架構，關係到列的數據類型
                ds.ReadXml(GetXmlFullPath(strXmlPath));
                DataTable dt = ds.Tables[0];
                DataRow newRow = dt.NewRow();                 //在原來的表格基礎上創建新行
                for (int i = 0; i < Columns.Length; i++)      //迴圈給一行中的各個列賦值
                {
                    newRow[Columns[i]] = ColumnValue[i];
                }
                dt.Rows.Add(newRow);
                dt.AcceptChanges();
                ds.AcceptChanges();
                ds.WriteXml(GetXmlFullPath(strXmlPath));
                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }
        #endregion

        #region 修改數據
        /// <summary>
        /// 修改指定節點的數據
        /// </summary>
        /// <param name="node">節點</param>
        /// <param name="value">值</param>
        public void Update(string node, string value)
        {
            try
            {
                XmlDocument doc = XMLLoad();
                XmlNode xn = doc.SelectSingleNode(node);
                xn.InnerText = value;
                doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + XMLPath);
            }
            catch { }
        }

        /// <summary>
        /// 修改指定節點的數據
        /// </summary>
        /// <param name="path">路徑</param>
        /// <param name="node">節點</param>
        /// <param name="value">值</param>
        /// 使用示列:
        /// XMLProsess.Insert(path, "/Node","Value")
        /// XMLProsess.Insert(path, "/Node","Value")
        public static void Update(string path, string node, string value)
        {
            try
            {
                XmlDocument doc = XMLLoad(path);
                XmlNode xn = doc.SelectSingleNode(node);
                xn.InnerText = value;
                doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
            }
            catch { }
        }

        /// <summary>
        /// 修改指定節點的屬性值(靜態)
        /// </summary>
        /// <param name="path">路徑</param>
        /// <param name="node">節點</param>
        /// <param name="attribute">屬性名，非空時修改該節點屬性值，否則修改節點值</param>
        /// <param name="value">值</param>
        /// 使用示列:
        /// XMLProsess.Insert(path, "/Node", "", "Value")
        /// XMLProsess.Insert(path, "/Node", "Attribute", "Value")
        public static void Update(