C# XML 操作

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1 xml檔案格式

<?xml version="1.0" encoding="utf-8"?><userInfo>  <userName>sa</userName>  <userPwd>111111</userPwd></userInfo>

2 關鍵代碼2.1 MUserInfo.cs

// ***********************************************************************// Assembly         : XML操作// Author           : Amy// Created          : 02-17-2014//// Last Modified By : Amy// Last Modified On : 02-17-2014// ***********************************************************************// <copyright file="MUserInfo.cs" company="Microsoft">//     Copyright (c) Microsoft. All rights reserved.// </copyright>// <summary></summary>// ***********************************************************************namespace XML操作{    /// <summary>    /// Class MUserInfo.    /// </summary>    public class MUserInfo    {        /// <summary>        /// The user name        /// </summary>        private string userName = string.Empty;        /// <summary>        /// The user password        /// </summary>        private string userPwd = string.Empty;        /// <summary>        /// Gets or sets the name of the user.        /// </summary>        /// <value>The name of the user.</value>        public string UserName        {            get { return userName; }            set { userName = value; }        }        /// <summary>        /// Gets or sets the user password.        /// </summary>        /// <value>The user password.</value>        public string UserPwd        {            get { return userPwd; }            set { userPwd = value; }        }    }}

2.2 XmlOperate.cs

// ***********************************************************************// Assembly         : XML操作// Author           : Amy// Created          : 02-17-2014//// Last Modified By : Amy// Last Modified On : 02-18-2014// ***********************************************************************// <copyright file="XMLOperate.cs" company="Microsoft">//     Copyright (c) Microsoft. All rights reserved.// </copyright>// <summary></summary>// ***********************************************************************using System.Xml;namespace XML操作{    /// <summary>    /// Class XMLOperate.    /// </summary>    public class XMLOperate    {        /// <summary>        /// Loads the XML.        /// </summary>        /// <param name="xmlfileName">Name of the xmlfile.</param>        /// <returns>System.String.</returns>        public static string LoadXML(string xmlfileName)        {            string result = string.Empty;            XmlDocument xml = new XmlDocument();            xml.Load(@xmlfileName);            return xml.InnerXml.ToString();        }        /// <summary>        /// Saves the XML.        /// </summary>        /// <param name="xmlContent">Content of the XML.</param>        /// <param name="xmlFileName">Name of the XML file.</param>        public static void SaveXML(string xmlContent, string xmlFileName)        {            XmlDocument xml = new XmlDocument();            xml.LoadXml(xmlContent);            xml.Save(@xmlFileName);        }        /// <summary>        /// Gets the user information by executable ml.        /// </summary>        /// <param name="fileName">Name of the file.</param>        /// <returns>MUserInfo.</returns>        public static MUserInfo GetUserInfoByXMl(string fileName)        {            MUserInfo model = new MUserInfo();            XmlDocument xml = new XmlDocument();            xml.Load(@fileName);            XmlNode xmlUserName = xml.SelectSingleNode("userInfo/userName");            if (xmlUserName != null)            {                model.UserName = xmlUserName.InnerText.Trim();            }            XmlNode xmlUserPwd = xml.SelectSingleNode("userInfo/userPwd");            if (xmlUserPwd != null)            {                model.UserPwd = xmlUserPwd.InnerText.Trim();            }            return model;        }        /// <summary>        /// Sets the user information automatic XML.        /// </summary>        /// <param name="flieName">Name of the flie.</param>        /// <param name="model">The model.</param>        public static void SetUserInfoToXML(string flieName, MUserInfo model)        {            XmlDocument xml = new XmlDocument();            xml.Load(@flieName);            XmlNode xmlUserName = xml.SelectSingleNode("userInfo/userName");            if (xmlUserName != null)            {                xmlUserName.InnerText = model.UserName;            }            XmlNode xmlUserPwd = xml.SelectSingleNode("userInfo/userPwd");            if (xmlUserPwd != null)            {                xmlUserPwd.InnerText = model.UserPwd;            }            xml.Save(@flieName);        }    }}