C#实现ini文件读写操作

 /// <summary>
  /// 配置文件 .ini操作类
  /// </summary>
  public class IniFileUtils
  {
    /// <summary>
    /// 写入INI文件
    /// </summary>
    /// <param name="section">节点名称[如TypeName]</param>
    /// <param name="key">键</param>
    /// <param name="val">值</param>
    /// <param name="filepath">文件路径</param>
    /// <returns></returns>
    [DllImport("kernel32")]
    private static extern long WritePrivateProfileString(string section, string key, string val, string filepath);
    /// <summary>
    /// 读取INI文件
    /// </summary>
    /// <param name="section">节点名称</param>
    /// <param name="key">键</param>
    /// <param name="def">值</param>
    /// <param name="retval">stringbulider对象</param>
    /// <param name="size">字节大小</param>
    /// <param name="filePath">文件路径</param>
    /// <returns></returns>
    [DllImport("kernel32")]
    private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retval, int size, string filePath);

    /// <summary>
    /// 写入或更新.ini配置文件属性值
    /// </summary>
    /// <param name="section">区域（节点）</param>
    /// <param name="key">key键属性名称</param>
    /// <param name="value">key键对应属性值param>
    /// <param name="path">.ini文件所在路径</param>
    public static void WriteContentValue(string section, string key, string value, string path)
    {
      //判断文件是或否存在
      if (File.Exists(path))
      {
        WritePrivateProfileString(section, key, value, path);
      }
    }

    /// <summary>
    /// 读取.ini配置文件属性值
    /// </summary>
    /// <param name="Section">区域(节点)</param>
    /// <param name="key">key键属性名称</param>
    /// <param name="path">.ini文件所在路径</param>
    /// <returns></returns>
    public static string ReadContentValue(string Section, string key, string path)
    {
      StringBuilder temp = new StringBuilder(1024);
      //判断文件是或否存在
      if (File.Exists(path))
      {
        GetPrivateProfileString(Section, key, "", temp, 1024, path);
      }
      return temp.ToString();

    }
}