System.Net.CaseInsensitiveAscii.Equals C# (CSharp) Method

        public new bool Equals(object firstObject, object secondObject)
        {
            string firstString = firstObject as string;
            string secondString = secondObject as string;
            if (firstString == null)
            {
                return secondString == null;
            }
            if (secondString != null)
            {
                int index = firstString.Length;
                if (index == secondString.Length)
                {
                    if (FastGetHashCode(firstString) == FastGetHashCode(secondString))
                    {
                        int comparisons = firstString.Length;
                        while (index > 0)
                        {
                            index--;
                            if (AsciiToLower[firstString[index]] != AsciiToLower[secondString[index]])
                            {
                                return false;
                            }
                        }
                        return true;
                    }
                }
            }
            return false;
        }
    }