user control postback not firing

[protechdm]

Hi,

I have a radiobuttonlist, dynamically created, which implements postback.

If I place this directly onto a page it works great.
But, if I place it onto a user control page and then place this user control onto a page the postback does not fire.

It appears I am not setting the ID's properly. If this is the case, what are the rules for setting ID's on dynamically created controls so they work on both pages and embedded pages?

Many thanks,

Glyn.