public PaymentControl(Model.Payment payment, Model.PositiveBalance positiveBalance)
		{
			this.InitializeComponent();

            _positiveBalance = positiveBalance;
            Payment = payment;

            UpdatePaymentInfo();
		}
        private void SavePositiveBalance()
        {
            if (_positiveBalance > 0m)
            {
                Model.PositiveBalance positiveBalanceToAdd = new Model.PositiveBalance()
                {
                    Amount = _positiveBalance,
                    PositiveBalanceDate = DateTime.Now,
                    AppliedDate = null,
                    PatientId = _selectedPatient.PatientId
                };

                if (BusinessController.Instance.Add<Model.PositiveBalance>(positiveBalanceToAdd) == false)
                {
                    throw new Exception("No se pudo guardar el saldo a favor");
                }   
            }
        }