Hi,

I have a table with 3 fields







I set my BO to map to this table, set ID and Descr to Do Not Allow NULL; FKID to Use nullable generic in BO mapper allow null option. When I save new record, I found that FKID is always ZERO instead of NULL if I leave FKID blank (bound in combobox). I figured out that myBO.AllowNullValuesOnNewRow = false.



So, I try to set myBO.AllowNullValuesOnNewRow = true but then I will hit error complaint that system unable to convert DBNull to string for textbox. I was thinking to change "Descr" to use "Return alternate on null" option.



May I know is it the prefered way? Or, any recommendation?



Thank you