void goButton_Click(object sender, RoutedEventArgs e)

{

this.NavigationService.Navigate(new ContentPage(), DateTime.Now);

}

void NavigationService_LoadCompleted(object sender, NavigationEventArgs e)

{

DateTime requestDateTime = (DateTime)e.ExtraData;

string msg = string.Format("Request started {0}\nRequest completed {1}", requestDateTime, DateTime.Now);

MessageBox.Show(msg);

}

WPF 參數在Page見傳遞