void UpdateBorrowInterest()
{
float amount = RoundBorrowAmount();
int months = RoundBorrowMonths();
bool canBorrow = amount > 0 && months > 0;
if (textBlockBorrowInterest != null)
{
if (canBorrow)
{
float interest = MyBank.CalculateBorrowInterest(months, amount);
textBlockBorrowInterest.Text = interest.ToString("F2") + " % per year";
}
else
{
if (amount > 0)
{
textBlockBorrowInterest.Text = "Select months";
}
else
{
textBlockBorrowInterest.Text = "Select amount";
}
}
}
if (buttonBorrowMoney != null)
{
if (canBorrow)
{
buttonBorrowMoney.IsEnabled = true;
}
else
{
buttonBorrowMoney.IsEnabled = false;
}
}
}