I'm up to Chapter 8 and so far I've seen no treatment of passing data between pages.

On page 73 it lists three methods and adds "You will see these covered in more detail throughout the book." However I don't recall any subsequent discussion of this fundamental feature.

There is nothing in the index under 'Sessions'.

Have I missed something or is it yet to come?

OK I see you have referred to a separate article for an earlier question. That seems to cover things except it doesn't explain how the session is recognized - is it via an id in a cookie or an id in a hidden field (which I thought I'd seen in another version of ASP)?

There is no indepth discussion of sessions in the book. Sessions are identified by their ID, which is usually stored in a cookie. You can choose to pass the ID in the URL as a query string parameter instead. You can read about sessions in ASP.NET here: http://msdn.microsoft.com/en-us/libr...v=vs.100).aspx