Issue with Breakpoint giving different results in application that is no breakpoint a

[sunshine19992]

Not sure if others have come acrossed this bit I have a program for a C# class I am taking and during my troubleshooting I have found that if I turn on a breakpoint and then press F5 to continue until the program finishes I am receiving different results than if I didn't insert a breakpoint. (Put breakpoint at 1st curly bracket after AddToSumCount(rollSum); line in RollDice() method):

Here is a copy of my code if you want to see it:

using System;
using System.Collections.Generic;
using System.Text;
 
namespace Lab5_Ex2
{
    class TwoDiceStats
    {
        //declare class variables
        private int dice1Roll, dice2Roll, rollSum;
 
        //declare & create class arrays
        int[] sumArray = new int[13]; 
        int[] dice1Array = new int[37];
        int[] dice2Array = new int[37];
        int[] calcSumArray = new int[37];
 
        public TwoDiceStats()
        {
        }
 
        public void RollDice()
        {
 
            for (int roll = 1; roll < dice1Array.Length; roll++)
            {
                //Roll dice# 1 using Random method
                Random randomNumber = new Random();
                dice1Roll = randomNumber.Next(1, 7);
                dice1Array[roll] = dice1Roll;
                //Roll dice# 2 using Random method
                dice2Roll = randomNumber.Next(1, 7);
                dice2Array[roll] = dice2Roll;
 
                //Calculate sum of values rolled
                rollSum = dice1Roll + dice2Roll;
                calcSumArray[roll] = rollSum;
 
                //Add to Sum count
                AddToSumCount(rollSum);
            } 
 
        }
 
        //Add to sum count Method
        public void AddToSumCount(int sum)
        {
            sumArray[sum]++;
        }
 
        //Display Results Method
        public void DisplayResults()
        {
            Console.WriteLine("Roll #\tDice 1\tDice 2\tSum\t\t\tRoll #\tDice 1\tDice 2\tSum");
            Console.WriteLine("------\t------\t------\t---\t\t\t------\t------\t------\t---");
            for (int i = 1; i < dice1Array.Length; i = i + 2)
            {
                Console.Write("{0,6}\t{1,6}\t{2,6}\t{3,3}", i, dice1Array[i], dice2Array[i], calcSumArray[i]);
                Console.Write("\t\t\t{0,6}\t{1,7}\t{2,7}\t{3,3}\n", i + 1, dice1Array[i + 1], dice2Array[i + 1], calcSumArray[i + 1]);
            }
 
            Console.WriteLine("\n{0} {1,10}","Sum","Frequency");
            Console.WriteLine("{0} {1,10}", "---", "----------");
 
            for (int sum = 2; sum < sumArray.Length; sum++)
                Console.WriteLine("{0,3} {1,10}", sum, sumArray[sum]);
        }
    }
 
    class TwoDiceStatsTest
    {
        static void Main(string[] args)
        {
            //create class object
            TwoDiceStats myDice = new TwoDiceStats();
 
            //Call Roll Dice Method
            myDice.RollDice();
 
            //Call Display Results Method
            myDice.DisplayResults();
 
            //keep console open until user presses Enter
            Console.Read();
        }
    }
}
 

[debasisdas]

Please check again , it might happen some part of the code is not executing because of the break point.