Get key field on copy

Hi all,

I have a list page that allows users to copy a record. I'd like to grab the ID of the record being copied and save it into a session variable. (I will then use this for a select statement so I can do an insert into a details table, giving the new master record the same details records as the copied master).

I assume I will do this in the "Copy page:onload" event, but I can't figure it out. I see in the help info at the top of the event page it says "where - WHERE clause that points to the record to be copied. Example: ID=19". So there it is, but how to I assign this to a session? My lame attempt was this:

XSession.Session["copyid"]=where;

This didn't give me errors, but also didn't work.


UPDATE
Before I posted this I did one last search and found this: http://asprunner.com/forums/topic/19507-tip-copy-child-records-when-master-record-is-copied/

It seems I need the "Add page: Before process" event and this code:


if (@$_REQUEST["copyid1"])
$_SESSION["copyid1"] = $_REQUEST["copyid1"];


But that's PHP. Can I/how can I do that in C#?


Thanks for any help.
Tim