Please help with following problem:

I use templated header in my UltraWebGrid. I Instantiate WebDateChooser into column header.

All works fine, Calendar works (It can be opened, input validation works ), BUT If my grid contains no records(after binding).

Calendar does not work! (It cannot be opened, input validation does not work).

Could anybody explain my this calandar behaviour, and how I can workaround it?