C#操作程序配置文件（ini）辅助类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.IO;

namespace CommonLibrary
{

    public class ConfigHelper
    {
        public string iniPath;
        /// <summary>
        /// 写入ini文件的函数
        /// </summary>
        /// <param name="section">段落</param>
        /// <param name="key">以单词开头的关键字</param>
        /// <param name="value"> 关键字值</param>
        /// <param name="filePath">INI文件的完整路径和名称</param>
        /// <returns></returns>
        [DllImport("Kernel 32")]
        private static extern long WritePrivateProfileString(String section, String key, string value, String filePath);

        /// <summary>
        /// ini文件读操作函数
        /// </summary>
        /// <param name="section">段落</param>
        /// <param name="key">以单词开头的关键字</param>
        /// <param name="def">无法读取时候时候的缺省数值</param>
        /// <param name="refValue">读取数值</param>
        /// <param name="size">数值的大小</param>
        /// <param name="filepath">INI文件的完整路径和名称</param>
        /// <returns></returns>
        [DllImport("kernel32")]
        private static extern int GetPrivateProfileString(String section, String key, String def, StringBuilder refValue, int size, String filepath);

        public ConfigHelper(String filePath)
        {
            iniPath = filePath;
        }
        /// <summary>
        /// 写入ini文件
        /// </summary>
        /// <param name="section">段落</param>
        /// <param name="key">关键字</param>
        /// <param name="value">关键字值</param>
        public void WriteIni(String section,String key,string value)
        {
            WritePrivateProfileString(section, key, value, this.iniPath);
        }
        /// <summary>
        /// 读取ini文件
        /// </summary>
        /// <param name="selection">段落</param>
        /// <param name="key">关键字</param>
        /// <returns></returns>
        public String GetInn(String selection, String key)
        {
            StringBuilder temp = new StringBuilder(500);
            Int32 i = GetPrivateProfileString(selection, key, "", temp, 500, this.iniPath);
            return temp.ToString();
        }
        /// <summary>
        /// 验证文件是否存在
        /// </summary>
        /// <returns></returns>
        public bool ExistsFile()
        {
            return File.Exists(this.iniPath);
        }
    }
}

因为自己写的小工具中需要保存配置文件，因此做一个备注