private void btnInsertCoin2_Click(object sender, EventArgs e)
{
coinCode = Int32.Parse(txtCoinDoor.Text);
if (activeCoins.IsActive(coinCode))
{
pedDoor.Open();
}
txtCoinDoor.Text = "";
}
public int DispenseCoin()
{
int number = r.Next(1, 10);
while (coins.IsActive(number))
{
number = r.Next(1, 10);
}
coins.AddCoin(number);
return(number);
}