读写INI文件操作类

详情介绍：http://zh.wikipedia.org/wiki/INI%E6%96%87%E4%BB%B6

示例：

下面是一个虚拟的程序，其INI文件有两个小节，前面的小节是用来设置拥有者的信息，而后面的小节是用来设置数据库的位置。前面的注解记载谁最后编辑此文件，而后面的注解记录为何不使用域名而是使用IP地址。

[owner] name=John Doe organization=Acme Products [database] server=192.0.2.42 ; use IP address in case network name resolution is not working port=143 file = "acme payroll.dat"

IniHelper 类

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.InteropServices;



namespace SingleStore.Code

{

    public class IniHelper

    {





        // 声明INI文件的写操作函数 WritePrivateProfileString()

        [DllImport("kernel32")]

        private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);



        // 声明INI文件的读操作函数 GetPrivateProfileString()

        [DllImport("kernel32")]

        private static extern int GetPrivateProfileString(string section, string key, string def, System.Text.StringBuilder retVal, int size, string filePath);



        //获取ini文件的路径

        private string sPath = null;

        public IniHelper(string path)

        {

            this.sPath = path;

        }



        /// <summary>

        /// 写入INI文件

        /// </summary>

        /// <param name="section">配置节</param>

        /// <param name="key">键名</param>

        /// <param name="value">键值</param>

        public void WriteValue(string section, string key, string value)

        {

            // section=配置节，key=键名，value=键值，path=路径

            WritePrivateProfileString(section, key, value, sPath);

        }



        /// <summary>

        /// 读取INI文件配置节下的键

        /// </summary>

        /// <param name="section"></param>

        /// <param name="key"></param>

        /// <returns></returns>

        public string ReadValue(string section, string key)

        {

            // 每次从ini中读取多少字节

            StringBuilder temp = new StringBuilder(255);

            // section=配置节，key=键名，temp=上面，path=路径

            GetPrivateProfileString(section,key,"",temp,255,sPath);

            return temp.ToString();

        }

    }

}

 

Form窗体调用

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.IO;

using SingleStore.Code;



namespace SingleStore

{

    public partial class Login : Form

    {

        public Login()

        {

            InitializeComponent();



            string IniPath = Directory.GetCurrentDirectory();



            //写入ini

            IniHelper ini = new IniHelper(IniPath + "/config.ini");

            ini.WriteValue("StoreShop", "userName", "admin");

            ini.WriteValue("StoreShop", "pwd", "admin");

            ini.WriteValue("StoreShop", "isRePwd", "0");



            //读取ini

            string ispwd = ini.ReadValue("StoreShop", "isRePwd");

            string xis = "";

            if (ispwd == "0")

            {

                xis = "是";

            }

            else

            {

                xis = "否";

            }

            MessageBox.Show("用户名：" + ini.ReadValue("StoreShop", "userName") + "\n" +

                "密码：" + ini.ReadValue("StoreShop", "pwd") + "\n" +

                "是否记住密码：" + xis);

        }

    }

}