System.Data.Select.FindClosestCandidateIndex C# (CSharp) Метод

        private bool FindClosestCandidateIndex()
        {
            _index = null;
            _matchedCandidates = 0;
            bool sortPriority = true;
            _table._indexesLock.EnterUpgradeableReadLock();
            try
            {
                int count = _table._indexes.Count;
                int rowsCount = _table.Rows.Count;
                for (int i = 0; i < count; i++)
                {
                    Index ndx = _table._indexes[i];
                    if (ndx.RecordStates != _recordStates)
                        continue;
                    if (!ndx.IsSharable)
                        continue;
                    int match = CompareClosestCandidateIndexDesc(ndx._indexFields);
                    if (match > _matchedCandidates || (match == _matchedCandidates && !sortPriority))
                    {
                        _matchedCandidates = match;
                        _index = ndx;
                        sortPriority = CompareSortIndexDesc(ndx._indexFields);
                        if (_matchedCandidates == _nCandidates && sortPriority)
                        {
                            return true;
                        }
                    }
                }
            }
            finally
            {
                _table._indexesLock.ExitUpgradeableReadLock();
            }

            return (_index != null ? sortPriority : false);
        }