Add a data into the Listview

Hi,

I use navigation page to navigate from page A to page B.
Page B only contains a Entry When a users Enter a data in the Entry. The page is poped.
Now when popping page B, I would like for page A to receive the value selected in Page B and i want to show the data into the listview
how can i do that. Please let me know if anyone have this solution for this problem

In short:
1) NavigationPage
2) Navigate from page A to page B
3) Get the Value from user
4) return selected value from page B to page A
5)Value Display into listview

Thanks in advance!