System.Windows.Forms.HexBox.PerformScrollLines C# (CSharp) Method

        void PerformScrollLines(int lines)
        {
            long pos;
            if(lines > 0)
            {
                pos = Math.Min(_scrollVmax, _scrollVpos+lines);
            }
            else if(lines < 0)
            {
                pos = Math.Max(_scrollVmin, _scrollVpos+lines);
            }
            else
            {
                return;
            }

            PerformScrollToLine(pos);
        }