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

        long FromScrollPos(int value)
        {
            int max = 65535;
            if(_scrollVmax < max)
            {
                return (long)value;
            }
            else
            {
                double valperc = (double)value / (double)max * (double)100;
                long res = (int)Math.Floor((double)_scrollVmax / (double)100 * valperc);
                return res;
            }
        }