C#操作config文件的具体方法

internal void settingApp_write(string key, string val)
 {
     System.Configuration.Configuration cOnfig= ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
 config.AppSettings.Settings["IsInit"].Value = val;
 config.Save(ConfigurationSaveMode.Modified);
 ConfigurationManager.RefreshSection("appSettings");
 }

internal string settingApp_read(string key)
{
    var val = ConfigurationManager.AppSettings[key];
    return val;
}