C# XML 操作

1 xml文件格式

<?xml version="1.0" encoding="utf-8"?>

<userInfo>

  <userName>sa</userName>

  <userPwd>111111</userPwd>

</userInfo>

2 关键代码

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);

        }



    }

}