How to set up a breakpoint to test month and futureValue?

Question

Hello Everyone,

 

I am trying to figure out what's the best way how I can set up a conditional expression using a breakpoint to determine the month and futureValue values in a for loop. I already set up the breakpoint, but I just don't know how I can set up conditions properly. In my web application, after I have set up the breakpoint, I show be able to see index (month) and futureValue of that month right? Here is my C# code and in it you will that the statement " futureValue= (futureValue )  .... " is the executable statement that I would like my breakpoint to be at.  

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace XEx05FutureValue
{
    public partial class Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
                for (int i = 50; i <= 500; i += 50)
                    ddlMonthlyInvestment.Items.Add(i.ToString());
        }

        protected void btnCalculate_Click(object sender, EventArgs e)
        {
            if (IsValid)
            {
                int monthlyInvestment = Convert.ToInt32(ddlMonthlyInvestment.SelectedValue);
                decimal yearlyInterestRate = Convert.ToDecimal(txtInterestRate.Text);
                int years = Convert.ToInt32(txtYears.Text);

                decimal futureValue = this.CalculateFutureValue(monthlyInvestment,
                    yearlyInterestRate, years);

                lblFutureValue.Text = futureValue.ToString("c");
            }
        }

        protected decimal CalculateFutureValue(int monthlyInvestment,
        decimal yearlyInterestRate, int years)
        {
            int months = years * 12;
            decimal monthlyInterestRate = yearlyInterestRate / 12 / 100;
            decimal futureValue = 0;
            for (int i = 0; i < months; i++)
            {
                futureValue = (futureValue + monthlyInvestment)
                    * (1 + monthlyInterestRate);
            }
            return futureValue;
        }

        protected void btnClear_Click(object sender, EventArgs e)
        {
            ddlMonthlyInvestment.SelectedIndex = 0;
            txtInterestRate.Text = "";
            txtYears.Text = "";
            lblFutureValue.Text = "";
        }
    }
}