System.Text.DecoderNLS.GetChars C# (CSharp) Method

        public unsafe override int GetChars(byte[] bytes, int byteIndex, int byteCount,
                                             char[] chars, int charIndex, bool flush)
        {
            // Validate Parameters
            if (bytes == null || chars == null)
                throw new ArgumentNullException(bytes == null ? nameof(bytes): nameof(chars), SR.ArgumentNull_Array);

            if (byteIndex < 0 || byteCount < 0)
                throw new ArgumentOutOfRangeException((byteIndex < 0 ? nameof(byteIndex): nameof(byteCount)), SR.ArgumentOutOfRange_NeedNonNegNum);

            if (bytes.Length - byteIndex < byteCount)
                throw new ArgumentOutOfRangeException(nameof(bytes), SR.ArgumentOutOfRange_IndexCountBuffer);

            if (charIndex < 0 || charIndex > chars.Length)
                throw new ArgumentOutOfRangeException(nameof(charIndex), SR.ArgumentOutOfRange_Index);

            Contract.EndContractBlock();

            // Avoid empty input fixed problem
            if (bytes.Length == 0)
                bytes = new byte[1];

            int charCount = chars.Length - charIndex;
            if (chars.Length == 0)
                chars = new char[1];

            // Just call pointer version
            fixed (byte* pBytes = bytes)
                fixed (char* pChars = chars)
                    // Remember that charCount is # to decode, not size of array
                    return GetChars(pBytes + byteIndex, byteCount,
                                    pChars + charIndex, charCount, flush);
        }