C# 读写ini文件

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using System.IO;

        [DllImport("kernel32")]
        private static extern long 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);

        private string iniPath = Application.StartupPath + @"\Config.ini";
        //写ini函数
        ///   <summary>
        ///   写INI文件
        ///   </summary>
        ///   <param   name="Section">节</param>
        ///   <param   name="Key">关键字</param>
        ///   <param   name="Value">值</param>
        private void WriteIniValue(string Section, string Key, string Value)
        {
            WritePrivateProfileString(Section, Key, Value, this.iniPath);
        }
        //读ini函数
        ///   <summary>
        ///   读取INI文件指定
        ///   </summary>
        ///   <param   name="Section">节</param>
        ///   <param   name="Key">关键字</param>
        ///   <returns>指定节-关键字的值</returns>
        private string Value;
        private void ReadIniValue(string Section, string Key)
        {
            StringBuilder temp = new StringBuilder(255);
            int i = GetPrivateProfileString(Section, Key, "", temp, 255, this.iniPath);
            Value = temp.ToString();
        }