System.Xml.XmlTextReaderImpl.InvalidCharRecovery C# (CSharp) Method

        private void InvalidCharRecovery(ref int bytesCount, out int charsCount)
        {
            int charsDecoded = 0;
            int bytesDecoded = 0;
            try
            {
                while (bytesDecoded < bytesCount)
                {
                    int chDec;
                    int bDec;
                    bool completed;
                    _ps.decoder.Convert(_ps.bytes, _ps.bytePos + bytesDecoded, 1, _ps.chars, _ps.charsUsed + charsDecoded, 1, false, out bDec, out chDec, out completed);
                    charsDecoded += chDec;
                    bytesDecoded += bDec;
                }
                Debug.Assert(false, "We should get an exception again.");
            }
            catch (ArgumentException)
            {
            }

            if (charsDecoded == 0)
            {
                Throw(_ps.charsUsed, SR.Xml_InvalidCharInThisEncoding);
            }
            charsCount = charsDecoded;
            bytesCount = bytesDecoded;
        }