button up and button down

Well, though the question is not clear for me. Let me give it a try.. I assume that you have two list items (let it be list box or list view control ) and you have two buttons up and down. Now you want to move data from first list item to second list item when you press down right ?

What you can try is when you click on down button, get the selected item text of the first list and add it to the next list, then delete the selected item from first list. The same logic can be used when you click on up button as well.

Let me know if you need the code for this.