private void NewUserHandler(object sender, RoutedEventArgs e)
{
EditUserWindow _new = new EditUserWindow(null);
_new.ShowDialog();
Users.ItemsSource = userMapper.Select(out _).ToList();
}
private void Users_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
User selected = (User)Users.SelectedItem;
EditUserWindow edit = new EditUserWindow(selected);
edit.Show();
}