BzReader.BrowseForm.UpdateAppSettings C# (CSharp) Method

        public static void UpdateAppSettings(string settingKey, string settingValue)
        {
            System.Configuration.Configuration config =
                ConfigurationManager.OpenExeConfiguration(
                ConfigurationUserLevel.None);

            AppSettingsSection asSection = config.AppSettings;
            asSection.Settings.Remove(settingKey);
            asSection.Settings.Add(settingKey, settingValue);

            config.Save(ConfigurationSaveMode.Full);
        }