I am having trouble binding a combox that is populated "manually" just entering the values in the control's list. Population by BO and Enum is fine. Whenever I navigate, or change the combo value I get this....





Keith Chisarik

My DB does not allow NULL and has a default value defined via the DDT.

Keith Chisarik

This doesn't have anything to do with it...you are not dealing with the DDT or the default values at this point....your problem is that the combo box is expecting the SelectedValue property to be set as it is the default property used for binding.  Change the BindingProperty to Text.