private void Button_Click_1(object sender, RoutedEventArgs e)
{
frm_Login ba = new frm_Login();
this.Close();
ba.Show();
}
private void worker_KillWorker()
{
Application.Current.Dispatcher.Invoke((Action) delegate
{
//replace this login page with the finished login page
frm_Login frm = new frm_Login();
frm.Show();
this.Close();
});
}