Save data in windows phone 8.1 c#

Question

I want when closed app and reopen app save data in the app...

private void Button_Click(object sender, RoutedEventArgs e)
    {


        textblock.Visibility = Visibility.Visible;

    }

I want add in this code save data in close the app?!

Answer 1

Is it Windows Phone 8.1 RT? If yes then you can do that:

 var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
 if (localSettings.Values.ContainsKey("textblockVisibility"))
 {
     var value = localSettings.Values["textblockVisibility"];
     textblock.Visibility = (bool) value ? Visibility.Visible : Visibility.Collapsed;
 }
 else
 {
      var valueToSave = textBlock.Visibility == Visibility.Visible ? true : false;
      localSettings.Values.Add("textblockVisibility", valueToSave);
 }