private void button2_Click(object sender, EventArgs e)
{
if (listBox1.SelectedItem != null)
{
theShop.SellToy(listBox1.SelectedIndex);
if (theShop.supplies[listBox1.SelectedIndex].Count == 0)
{
theShop.supplies.RemoveAt(listBox1.SelectedIndex);
}
RefreshData();
}
}
