Any way to convert an async postback to a full postback incode-behind?

[Ed Cayce]

Here is the deal - I have some controls in an UpdatePanel. Most of
the time, the code-bhind that responds to these controls will do fine
wiith an async postback. But in some cases, determined only by what
happens in code-behind, I need to refresh the entire page and not just
what is in the Update Panels.

Any way to do this? I have searched and have not found an answer.
The only kludge i can think of is to register a stratup script that
then posts the whole page back - but I don't want to post back twice,
with all the overhead in entails.

Server.Transfer to same page loses all the viewstate info.

help!

Ed