//SHOW BOOK BORROW MENU
private void BtnBorrow_Click(object sender, RoutedEventArgs e)
{
UserBorrow userBorrow = new UserBorrow();
userStackPanel.Children.Clear();
userStackPanel.Children.Add(userBorrow);
}
public UserHome()
{
InitializeComponent();
UserBorrow userBorrow = new UserBorrow();
userStackPanel.Children.Clear();
userStackPanel.Children.Add(userBorrow);
}