private void StopRefreshDdlPage(object sender, CancelEventArgs e)
 {
     dp           = null;
     sp           = null;
     ip           = null;
     App.dt.Tick -= DdlPage.RefreshDdlPageEvent;
     App.dt.Tick -= DdlPage.RefreshDdlPageEventHandler;
 }
 private void SettingPageBtn_Checked(object sender, RoutedEventArgs e)
 {
     if (sp == null)
     {
         sp = new SettingPage();
     }
     MainFrame.Content = sp;
     CheckBtnAnimation(SettingIcon, SettingTextBlock);
 }