By default, the ShowImageList property is True. Use the ShowImageList property to hide the control's images list window. The control's images list window is visible only at design time. Use the Images method to associate an images list control to the control. The <img> tag can be used in the Caption property of the Item object. Also, the Image property assign an icon to the specified item. Use the ReplaceIcon method to add, remove or clear icons in the control's images collection.