BaconographyWP8.View.ComposeMessagePageView.ChangeUser_Click C# (CSharp) Method

        private void ChangeUser_Click(object sender, RoutedEventArgs e)
        {
            var vm = this.DataContext as MessagesViewModel;
            if (vm != null)
            {
                var _navigationService = ServiceLocator.Current.GetInstance<INavigationService>();
                _navigationService.Navigate<LoginPageView>(null);
            }
        }