public bool Seek(long key)
{
if (_header == null)
{
return(false);
}
_pos = _fst.BinarySearch(_dataStart, _header->NumberOfEntries, key, _fst._entrySize);
if (_fst._lastMatch > 0)
{
_pos++; // We didn't find the key.
}
return(_pos != _header->NumberOfEntries);
}
