private void btnclose(object sender, System.Windows.RoutedEventArgs e)
{
home h = new home();
placeholder.Content = h;
btn_close.Visibility = Visibility.Hidden;
}
private void btn_home_Click(object sender, RoutedEventArgs e)
{
home h = new home();
placeholder.Content = h;
}
void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
home h = new home();
placeholder.Content = h;
}
