combobox drop down list with columns

how to add columns for combobox drop down list
give me same example for that

It’s not possible to have multiple columns in the drop-down list of a ComboBox. To have that, you would need to extend ComboBox on the client-side. The easier server-side solution is to use Table.

It is not to hard to implement something similar to combo box with multiple columns.

The actual component to use would be a PopupView customise the minimized view to apear like a combobox.
The popupContent of the view is a table , in our case we added extra features like a search filter etc…