public class IniInfo
    {
        //呼叫API函式

        [DllImport("kernel32")]
        private static extern bool WritePrivateProfileString(string section, string key, string val, string filePath);
        [DllImport("kernel32")]
        private static extern int GetPrivateProfileString(string section, string
 
 key, string def, StringBuilder retVal, int size, string filePath);

        /// <summary>
        /// 寫如INI檔案
        /// </summary>
        /// <param name="Section">主節點名稱</param>
        /// <param name="Key">鍵名稱</param>
        /// <param name="Value">鍵值</param>
        ///
 
 <param name="path">INI檔案地址</param>
        public static void WriteIni(string Section, string Key, string Value, string path)
        {
            WritePrivateProfileString(Section, Key, Value, path);
        }


        /// <summary>
        /// 讀取INI檔案
        /// </summary>
        ///
 
 <param name="Section">主節點名稱</param>
        /// <param name="Key">鍵名稱</param>
        /// <param name="path">INI檔案地址</param>
        /// <returns>鍵值</returns>
        public static string ReadIni(string Section, string Key, string path)
        {
            StringBuilder temp = new StringBuilder(255);
            int i = GetPrivateProfileString(Section, Key, "", temp, 255, path);
            return temp.ToString();
        }

以上是原始碼！