/// <summary>
/// 当此页面即将显示在框架中时调用。
/// </summary>
/// <param name="e"></param>
protected override void OnNavigatedTo(NavigationEventArgs e)
{
ApplicationSettingsHelper.LoadSetttingFromLocalSettings(ApplicationSettingsConstants.AppState, AppState.Active.ToString());//本地配置文件加载并设置为激活状态
}
