if (value == -1)

				if (value == -1)

					ClearSelected ();

					ClearSelected ();

					UnSelectItem (selected_index, true);

					UnSelectItem (selected_index, true);

    				if (value < top_index)

    				if (value < top_index)

    					}

    					}

    				}

    				}

    				SelectItem (value);

    				SelectItem (value);

    				selected_index = value;

    				selected_index = value;

    				FocusedItem = value;

    				FocusedItem = value;

    				OnSelectedIndexChanged  (new EventArgs ());

    				OnSelectedIndexChanged  (new EventArgs ());