public override long Seek(long offset, SeekOrigin origin)
{
switch (origin)
{
case SeekOrigin.Begin:
position = offset;
break;
case SeekOrigin.Current:
position += offset;
break;
case SeekOrigin.End:
position = Length;
position += offset;
break;
}
if (position >= Stream1.Length)
{
position = Stream1.Length + Stream2.Seek(offset - Stream1.Length, SeekOrigin.Begin);
}
else
{
position = Stream1.Seek(offset, SeekOrigin.Begin);
}
return(position);
}