Page Close event in Navigation Service Page

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Hi,

I am looking for a Page close event equivelent to IsOK() in a dialogbox
that closes a page and save some data.

I have a wizard type application in c# where each page is derived from Page
class and I am moving from one page to another on nextbuttonClick(). At the
end I want to click the Finish button that closes the last page and do
something.

Cheers,

Manj.