private void AddUser_Click(object sender, RoutedEventArgs e)
{
CreateUserWnd wnd = new CreateUserWnd();
wnd.Users = db;
wnd.ShowDialog();
}
private void ListView_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
DataRowView sel = listView.SelectedValue as DataRowView;
CreateUserWnd wnd = new CreateUserWnd(sel.Row);
wnd.Users = db;
wnd.ShowDialog();
}