public ExPartStream(ExStreamBase b, Range rng, FileAccess ac= FileAccess.ReadWrite)
{
_baseStream = b;
_startPosition = rng.Lower;
_length = rng.Higher - rng.Lower;
_access = ac;
}
//Constructors
public ExPartStream(ExStreamBase b, Int64 start, Int64 len, FileAccess ac = FileAccess.ReadWrite)
{
if (len < 0) { throw new ArgumentOutOfRangeException(); }
if (start < 0) { throw new ArgumentOutOfRangeException(); }
_baseStream = b;
_startPosition = start;
_length = len;
_access = ac;
}
