Position Sample Settings Drop-down List Position: Drop-down List: Left Center Right Top Center Bottom Aligns to Textbox: Left Center Right Top Center Bottom Horizontal Collision Detection: Flip Fit None Vertical Collision Detection: Flip Fit None Offset X: Offset Y: Description The C1ComboBox supports changing the position of the drop-down list for the C1Combobox . DropDownListPosition -Changing the position of the drop-down list. Use the option to control the position of the drop-down list; it supports horizontal, vertical, offset, and collision settings. Documentation