OpenTween.TweenMain.GoTopEnd C# (CSharp) Method

        private void GoTopEnd(bool GoTop)
        {
            if (_curList.VirtualListSize == 0)
                return;

            ListViewItem _item;
            int idx;

            if (GoTop)
            {
                _item = _curList.GetItemAt(0, 25);
                if (_item == null)
                    idx = 0;
                else
                    idx = _item.Index;
            }
            else
            {
                _item = _curList.GetItemAt(0, _curList.ClientSize.Height - 1);
                if (_item == null)
                    idx = _curList.VirtualListSize - 1;
                else
                    idx = _item.Index;
            }
            SelectListItem(_curList, idx);
        }