windows phone 7 - Passing data from page to page

Question

I'm looking for the best practice on how to pass data from page to page.

In Page A I have a button that fires off Page B.
On Page B I have 6 textboxes that allow the user to enter information. When the user is done, the click on a button that brings them back to Page A.

I want to pass that data back to Page A.

I've seen suggestions to:

• build XML documents and save to Isolated Storage
• use the App class to store information in properties
• pass it like a query string

I'm looking for the Best practice. Is there one that Microsoft recommends or one that is generally accepted as the best way?

Thanks

Answer 1

PhoneApplicationService.Current.State["yourparam"] = param
NavigationService.Navigate(new Uri("/view/Page.xaml", UriKind.Relative));

then in other page simply

var k = PhoneApplicationService.Current.State["yourparam"];