How population combobox with dependency of code product.

Select * from Produto where code_product = textbox_code_product

I'm not sure I understand the question... but I'll give it a shot .



Are you trying to pull back all the records that match the selected value of your combo box?





(I wouldn't recommend hard coding it in the FillDataTable like that, but it gives you a start)



Or are you trying to populate the combo box itself with all the records associated with a given code? If so, then just add a fill method to your BO that corresponds to your select statement, and call that method in your combo's PopulationDataSourceSettings.