C# store app, send parameters on Basic page back button -

i made c# store app. send parameters page , read them, works fine. send parameters other pages this:

this.frame.navigate(typeof(itemdetailpage), uniqueid); //(works) 

i make use of basic pages (because has default backbutton , title. want send parameter sended itemdetailpage (like did in above example) in page on, perhaps in button?

does has solution how can save/ retreive de value when return current page?

thanks in advance.

there 2 ways perform this: 1) store value in isolatedstoragesettings object define in app.xaml.cs , store value in , retrive in desired pages. example :

 public isolatedstoragesettings settings = isolatedstoragesettings.applicationsettings;   store value :    (app.current app).settings.add("sampledata", txtsomething.text);     retrive :    (string)(app.current app).settings["sampledata"];   , whenever want update data remove value inside , add     again. 

2) decalre variable in app.xaml.cs , access anywhere.