public void btncheckbalance(object sender, EventArgs args)
{
Banktransaction b1 = new Banktransaction();
double udpatedBalance = b1.checkBalance();
lblResult.Text = "Balance: " + udpatedBalance.ToString();
}
public void btnwithdrawal(object sender, EventArgs args)
{
amt = double.Parse(txtAmount.Text);
Banktransaction b1 = new Banktransaction();
double udpatedBalance = b1.withdrawal(amt);
lblResult.Text = "Balance after withdrawal: " + udpatedBalance.ToString();
}