DropDownListBox, DropDownPictureListBox controls
If the ShowList property is enabled, the option list is always displayed. If this property is not enabled, the list is displayed only when the user clicks on the control’s down arrow.
To specify that the option list should always be displayed:
Select the Always Show List check box on the General page of the control’s Properties view.
The ShowList property takes a boolean value. The following example specifies that the list of choices for the DropDownListBox should always be displayed:
ddlb_1.ShowList = TRUE
Note that the AllowEdit property must also be true when ShowList is true.