Store data when navigating from browserpage to calcpage?

Question

Hey! I have a problem. When i navigate from my BrowserPage.xaml to my CalculatorPage.xaml and back to my BrowserPage.xaml, then all my browsing data is gone... i want to go back to what i was on when i navigated to the CalculatorPage.xaml.. Im new to programming, and i am only 12 year old... Can you help me? My navigation code on BrowserPage.xaml.cs: private void NavigateToCalc_Click(object sender, EventArgs e) { NavigationService.Navigate(new Uri("/CalculatorPage.xaml", UriKind.Relative)); } My back-Navigation code on CalculatorPage.xaml.cs: private void BackButton_Click(object sender, RoutedEventArgs e) { NavigationService.GoBack(); }