WP8 how to interact with controls in other screens

Question

how can I interact with controls/objects, ie changing a property or firing a method, which are located in another screen/class using C# for Windows Phone 8? Thanks in advance!

Answer 1

Sorry for posting this as an answer I don't have enough reputation for this. What you can do is use the PhoneApplicationService.State that is a dictionnary where you can store any object. The data remains here until you leave the application.

Here is the documentation of the dictionary