Setting focus and highlight

Hi,

can anyone tell me how to focus on the next item in the grid if a row is deleted from grid. If the deleted item is the last in a grid ,focus on the previous item.

and same for treeview. means  focus on the next item at the same level as the deleted item (or the previous item, if the deleted item was the last at this level). If the deleted item was the only one at this level, focus on the parent.

Thanks in advance,Please Help me,its Urgent.