How can I access to e.handle for a button in silverlight?

How can I access to e.handle for a button in silverlight?

I have some button in master page (mainpage and I use the event click of
its in other page by mp like:
MainPage mp =
(MainPage)(((BusinessApplication8.Controls.BusyIndicator)Application.Current.RootVisual).Content);
it's being run more than one and I can not use a e.Handdled to prevent
them. How can I do to control it?