I'm populating a Infragistics combo box using SF Population methods and it works fine. When I blank out the field I get a error: Conversion from type 'DBNull' to type 'String' is not valid. I have set the 'Nullable' property to 'False' but it doesn't seem to make a difference.  When I use a SF ComboBox it works fine.

Any Ideas on how to resolve this issue? Is this a Infragistics problem?

Thanks

Tim

Tim, in another post, Trent mentioned that UltraCombo is derived from grid and you should use Business Binding Solution.



Hope I'm right quoting Trent!

..ßen

Yeah, I knew which control you were referring to, but I am not sure why you are having a problem.  Ben Hayat is also correct about the UltraCombo, you can use this as we speak with the BBS.  In fact, I think it was you who initially asked that question so I am sure this is a bit redundant

Yes, I can use the control with a BBS but there is no biniding properties like the other controls for Business Object, binding field, state etc...  Perhaps I'm missing something?

Tim

Trent,

I emailed you a small sample application that demonstrates the error on the ComboBoxEdit.

Tim

Ah, yes, the data source for the grid that drops down can be bound to the BBS, but you're right, the IBusinessBindable is not implemented for the fields that you normally use to bind to a business object.  However, any control can bind to a BBS using the DataBindings type editor that you find in the "Data" category.