I have a combobox with a lookup list bound to an int field. For the int field, my BO returns 0 as an alternate for null and my TopMostValue is set to 0. I have read several posts on here which suggests that if I select the TopMostItem then it should write Null back to the database and not 0. In my case, it writes 0 back to the database.

My database can accepts nulls so there is no problem on that score. Given the other posts, should I be seeing Null or 0 written to the database?

Thanks in advance,

Aaron