public int AddExternalName(ExternalNameRecord rec){ExternalNameRecord[] tmp = new ExternalNameRecord[_externalNameRecords.Length + 1];Array.Copy(_externalNameRecords, 0, tmp, 0, _externalNameRecords.Length);tmp[tmp.Length - 1] = rec;_externalNameRecords = tmp;return _externalNameRecords.Length - 1;}