This ComboBox combines the power and ease of use of
a ComboBox with the full functionality of a lookup DataGridForm.
When an end-user opens a ComboBox the full Lookup DataGridForm content is shown
inside the ComboBox area. This offers lots of advantages, is easier to use and
an end-user just stays in the current form.
Example:

Changing the ComboBox dropdown area
Of course you can modify or extend the Form shown in the dropdown to anything
you like. It’s also possible to allow inline editing in the DataGrid cells
instead of the data entry buttons.
Wizard
Like the SimpleComboBox this control also providers a rightmouse click “Wizard
…” option at designtime. This way you have todo as little as possible.