Hello.. this is what I am doing now... Im trying to pupulate the combo box, but i'm gettin this error "Conversion from type 'DBNull' to type 'String' is not valid.". The funny thing is that I have a a text box that loads from the same BO and loads the same field, and it's working..

PS - I dont have any null info on the "nome_clube" field on the table.

Any Clues.. anyone?

Hi everything u said was correct, but i still did not inserted the clubs combobox in the clubs form, but.. it was going to show the number of the country (PK) coming from the countries table..  i guess

So, u got it...

Thanks ....

Ricardo,

This will work similar as the example I showed you previously.  Follow the steps below:

1. Select the country combo box
2. Click the PopulationDataSourceSettings
3. Choose the Country Business Object
4. Choose the method that will Fill the BO with the countries
5. Add the country name as the display column
6. Add {0} to the format column
7. Pick the primary key of the Country table for the Value Member
8. Click OK
9. Make sure that the PopulationType of the combo is set to BusinessObject
10. On the same combo box, select the BusinessObject property to the instance of the Clubes on the form
11. Set the BindingField to the Country field in the Clubes table.

That should be it.  Let me know if you have any questions.