System.IO.Compression.ZipArchiveEntry.LoadLocalHeaderExtraFieldAndCompressedBytesIfNeeded C# (CSharp) Метод

        internal bool LoadLocalHeaderExtraFieldAndCompressedBytesIfNeeded()
        {
            string message;
            //we should have made this exact call in _archive.Init through ThrowIfOpenable
            Debug.Assert(IsOpenable(false, true, out message));

            //load local header's extra fields. it will be null if we couldn't read for some reason
            if (_originallyInArchive)
            {
                _archive.ArchiveStream.Seek(_offsetOfLocalHeader, SeekOrigin.Begin);

                _lhUnknownExtraFields = ZipLocalFileHeader.GetExtraFields(_archive.ArchiveReader);
            }

            if (!_everOpenedForWrite && _originallyInArchive)
            {
                //we know that it is openable at this point

                _compressedBytes = new byte[(_compressedSize / MaxSingleBufferSize) + 1][];
                for (int i = 0; i < _compressedBytes.Length - 1; i++)
                {
                    _compressedBytes[i] = new byte[MaxSingleBufferSize];
                }
                _compressedBytes[_compressedBytes.Length - 1] = new byte[_compressedSize % MaxSingleBufferSize];

                _archive.ArchiveStream.Seek(OffsetOfCompressedData, SeekOrigin.Begin);

                for (int i = 0; i < _compressedBytes.Length - 1; i++)
                {
                    ZipHelper.ReadBytes(_archive.ArchiveStream, _compressedBytes[i], MaxSingleBufferSize);
                }
                ZipHelper.ReadBytes(_archive.ArchiveStream, _compressedBytes[_compressedBytes.Length - 1], (int)(_compressedSize % MaxSingleBufferSize));
            }

            return true;
        }