Check For Sum

for (int i = 0; i < numbers.Length; i++)
        {
            currentSum = numbers[i];
            if (currentSum==s)
            {
                isSum = true;
                break;
            }

            for (int j = i + 1; j < numbers.Length; j++)
            {
                currentSum += numbers[j];

                if (currentSum == s)
                {
                    isSum = true;
                    start = i;
                    end = j;
                }
            }
        }