Help with increments please.

Question

Hello,

I just need little help with this Amortization Calculator. The only problem with this is that when you change any of the numbers (loan amount, rate, term) and then hit calculate again, it calculates everything but it doesn't clear the previous data. It keeps adding to the last one.

I've attached screenshots. I don't know how to fix that. Can someone help me out please? I've attached zip file, and two screenshots.

http://img834.imageshack.us/img834/6480/55165440.png

http://img268.imageshack.us/img268/5392/82416026.png

Suthish Nair · Answer

dhru patel, Query resolved?

Manish Dwivedi · Answer

Hi dhru, I have added one line in your btncalculate_Click method and it works fine as you want. private void btncalculate_Click(object sender, EventArgs e) { txtresults.Text = ""; // This is converting all three inputs into double types. double loanAmount = Convert.ToDouble(txtloanamt.Text); // Converting loanamount into double types. double rate = Convert.ToDouble(txtrate.Text) / 100; // Converts interest rate into double types. double numPayments = Convert.ToDouble(txtterm.Text); // Converts Loan terms into integer. // Calculate monthly payment. double payment = loanAmount * (Math.Pow((1 + rate / 12), numPayments) * rate) / (12 * (Math.Pow((1 + rate / 12), numPayments) - 1)); // show this monthly payment in textbox. txtpayment.Text = payment.ToString("C"); double interestRateMonth; double totalPrincipalPaid = 0; for (Int16 intMonth = 1; intMonth { loanAmount -= totalPrincipalPaid; interestRateMonth = (rate / 12) * loanAmount; //Calculates monthly interest totalPrincipalPaid = (payment - interestRateMonth); txtresults.Text += "Month "; txtresults.Text += Convert.ToInt16(intMonth); txtresults.Text += "	"; txtresults.Text += "Interest: "; txtresults.Text += interestRateMonth.ToString("C"); txtresults.Text += "	"; txtresults.Text += "Principal: "; txtresults.Text += totalPrincipalPaid.ToString("C"); txtresults.Text += Environment.NewLine; } //close displaying table. } // close Submit button calculations

Suthish Nair · Answer

private void btncalculate_Click(object sender, EventArgs e) { txtresults.Text = ""; }

Help with increments please.

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