内存比较的API

        static bool BytesEquals(byte[] array1, byte[] array2)
        {
            if (array1.Length != array2.Length)
                return false;

            for (int i = 0; i < array1.Length; i++)
                if (array1[i] != array2[i])
                    return false;
            return true;
        }

        [DllImport("ntdll.dll")]
        public static extern int RtlCompareMemory(IntPtr Destination,
            IntPtr Source, int Length);