private void txtDownPayment_Leave(object sender, EventArgs e)
{
decimal downPayment = LayawayPaymentCalculator.DownPayment;
if (!decimal.TryParse(txtDownPayment.Text, out downPayment))
{
MessageBox.Show("Invalid down payment amount.");
HighlightControl(txtDownPayment);
RevertToPreviousDownPayment();
txtDownPayment.Focus();
txtDownPayment.SelectAll();
return;
}
if (downPayment < 0 || downPayment >= MaximumDownPayment)
{
MessageBox.Show(string.Format("Down Payment cannot be negative and must be less than {0:c}.", MaximumDownPayment));
HighlightControl(txtDownPayment);
RevertToPreviousDownPayment();
txtDownPayment.Focus();
txtDownPayment.SelectAll();
return;
}
if (!LayawayPaymentCalculator.CanDistributeIfDownpaymentSetTo(downPayment))
{
MessageBox.Show(string.Format("This is an invalid value because it will not distribute accross {0} payments.", LayawayPaymentCalculator.NumberOfPayments));
HighlightControl(txtDownPayment);
RevertToPreviousDownPayment();
txtDownPayment.Focus();
txtDownPayment.SelectAll();
return;
}
if (LayawayPaymentCalculator.DownPayment == downPayment)
{
return;
}
LayawayPaymentCalculator.DownPayment = downPayment;
UpdateCalculatedValues();
}
