protected override void SetFileStream(string path, bool newFile, long fileSizeInBytes, long startingPosition)
{
const int bufferSize = 2 << 11;
CurrentStream = UnbufferedStream.Get(
path, FileMode.OpenOrCreate,
FileAccess.Write, FileShare.None, bufferSize);
CurrentStream.Seek(startingPosition, SeekOrigin.Current);
if (!newFile)
{
return;
}
CurrentStream.SetLength(fileSizeInBytes);
Flush();
}