public XlsStream(XlsHeader hdr, uint startSector, bool isMini, XlsRootDirectory rootDir) { m_fileStream=hdr.FileStream; m_fat=hdr.FAT; m_hdr=hdr; m_startSector=startSector; m_isMini=isMini; m_rootDir=rootDir; CalculateMiniFat(rootDir); }