Bio.IO.BAM.BAMFormatter.ValidateSQHeader C# (CSharp) Method

        private void ValidateSQHeader(string refSeqName)
        {
            if (refSeqName != Properties.Resource.SAM_NO_REFERENCE_DEFINED_INDICATOR)// the '*' to indicate the read is unmapped
            {
                string message;
                List<SequenceRange> rages = this.refSequences.Where(SR => string.Compare(SR.ID, refSeqName, StringComparison.OrdinalIgnoreCase) == 0).ToList();

                if (rages.Count == 0)
                {
                    message = string.Format(CultureInfo.InvariantCulture, Properties.Resource.SQHeaderMissing, refSeqName, CultureInfo.CurrentCulture);
                    throw new ArgumentException(message);
                }

                if (rages.Count > 1)
                {
                    message = string.Format(CultureInfo.InvariantCulture, Properties.Resource.DuplicateSQHeader, refSeqName, CultureInfo.CurrentCulture);

                    throw new ArgumentException(message);
                }
            }
        }