| Object Model > TDBDropDown Control |
The TDBDropDown control, which is a subset of the TDBGrid control, is used as a multicolumn drop-down list box for a grid column. You cannot use it as a standalone control.
At design time, you can place a TDBDropDown control on a Visual Basic form just as you would a TDBGrid control. However, the drop-down control will be invisible at run time unless it is attached to a Column object of a TDBGrid control.
To use the drop-down control, set the DropDown property of a grid column to the name of a TDBDropDown control at either design time or run time. At run time, when the user clicks the in-cell button for that column, the TDBDropDown control will appear below the grid's current cell. If the user selects an item from the drop-down control, the grid's current cell is updated. The TDBDropDown control also supports incremental search.