Question

I am trying to make a simple time-calculating program in ASP.NET where people enter an amount, an annual interest, and a payment per month.

I need to get the time in months to when the debt is paid of along with interest, and i want to test if the monthly payment amount is smaller than the monthly interest amount using an if else condition but it doesn’t seem to be working. If I provide a monthly payment smaller than the monthly interest amount, then the program hangs.

My code:

protected void btnCalculate_Click(object sender, EventArgs e)
{
    if (IsValid)
    {
        int BorrowAmount = Convert.ToInt32(txtBorrow.Text);
        double InterestRate = Convert.ToDouble(txtRate.Text);
        int MonthlyPay = Convert.ToInt32(txtMAmount.Text);

        double Rammount = BorrowAmount;
        
        double monthlyIntRate = InterestRate / 12;
        //LblNoMonths.Text = Convert.ToString(monthlyIntRate);
        //LblNoMonths.Text = Convert.ToString(monthlyIntRate);
        double firstmonthlyIntRateAmt = ((monthlyIntRate / 100) * Rammount);
        
        
        if (MonthlyPay >= firstmonthlyIntRateAmt)
        {
            int month = 0;
            while (Rammount >= MonthlyPay)
            {
                month++;
                double monthlyIntRateAmt = ((monthlyIntRate / 100) * Rammount);

                Rammount = Rammount - (MonthlyPay - monthlyIntRateAmt);

            }
            LblNoMonths.Text = Convert.ToString(month);
        }
        else
        {
           
            LblNoMonths.Text ="Monthly payment is less than the monthly interest rate!!";

        }
        

       
    }
}

The code inside else condition seems to have no effect:

LblNoMonths.Text =@"Monthly payment is less than the monthly interest rate!!";

Am I doing anything wrong?

Answer 1

just press F9 on If Statement (Break Point) and start debugging. to go step forward just use F10 to follow code execution flow! 😉 You can also use VS watch window to see exact amount inside each value … nothing else would help you!