private void salvarSaldo() // SALVA O SALDO NO ARQUIVO 'SALDO.TXT'.
{
String textoRecebido = txbDinheiro.Text.Replace("R$", "").Replace(" ", "").Replace("00,", "");
Double.TryParse(textoRecebido, out double saldoTemp);
double saldoParcial = saldoTemp + saldoFinal.getSaldo();
saldoFinal.setSaldo(saldoParcial);
StreamWriter writer = new StreamWriter(@"files\\saldo.txt");
writer.WriteLine(saldoFinal.getSaldo());
writer.Dispose();
System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("pt-BR");
lblSaldo.Text = string.Format("{0:C}", Convert.ToDouble(saldoFinal.getSaldo()));
}