读写Ini文件

// 声明INI文件的写操作函数 WritePrivateProfileString()
        [System.Runtime.InteropServices.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()
        [System.Runtime.InteropServices.DllImport("kernel32")]
        private static extern int GetPrivateProfileString(string section, string key, string def, System.Text.StringBuilder retVal, int size, string filePath);
        public static string WriteValue(string section, string key, string value)
        {
            string sPath = getIniFilePath();

            long i = WritePrivateProfileString(section, key, value, sPath);
            if (i == 0)
                return "fail";
            else
                return "success";

        }
        public static string ReadValue(string section, string key)
        {
            string sPath = getIniFilePath();
            StringBuilder temp = new StringBuilder(255);
            int i = GetPrivateProfileString(section, key, "", temp, 255, sPath);
            if (i == 0)
                return "fail";
            else
                return temp.ToString();
        }

        private static string getIniFilePath()
        {
            string sPath = null;
            if (System.Environment.CurrentDirectory == AppDomain.CurrentDomain.BaseDirectory)//windows应用程序则相等
                sPath = AppDomain.CurrentDomain.BaseDirectory;
            else
                sPath = AppDomain.CurrentDomain.BaseDirectory + @"\config.ini";
            return sPath;
        }