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

        void PaintHexAndStringView(Graphics g, long startByte, long endByte)
        {
            Brush brush = new SolidBrush(GetDefaultForeColor());
            Brush selBrush = new SolidBrush(_selectionForeColor);
            Brush selBrushBack = new SolidBrush(_selectionBackColor);

            int counter = -1;
            long intern_endByte = Math.Min(_byteProvider.Length-1, endByte+_iHexMaxHBytes);

            bool isKeyInterpreterActive = _keyInterpreter == null || _keyInterpreter.GetType() == typeof(KeyInterpreter);
            bool isStringKeyInterpreterActive = _keyInterpreter != null && _keyInterpreter.GetType() == typeof(StringKeyInterpreter);

            for(long i = startByte; i < intern_endByte+1; i++)
            {
                counter++;
                Point gridPoint = GetGridBytePoint(counter);
                PointF byteStringPointF = GetByteStringPointF(gridPoint);
                byte b = _byteProvider.ReadByte(i);

                bool isSelectedByte = i >= _bytePos && i <= (_bytePos + _selectionLength-1) && _selectionLength != 0;

                if(isSelectedByte && isKeyInterpreterActive)
                {
                    PaintHexStringSelected(g, b, selBrush, selBrushBack, gridPoint);
                }
                else
                {
                    PaintHexString(g, b, brush, gridPoint);
                }

                string s;
                if(b > 0x1F && !(b > 0x7E && b < 0xA0) )
                {
                    s = ((char)b).ToString();
                }
                else
                {
                    s = ".";
                }

                if(isSelectedByte && isStringKeyInterpreterActive)
                {
                    g.FillRectangle(selBrushBack, byteStringPointF.X, byteStringPointF.Y, _charSize.Width, _charSize.Height);
                    g.DrawString(s, Font, selBrush, byteStringPointF, _stringFormat);
                }
                else
                {
                    g.DrawString(s, Font, brush, byteStringPointF, _stringFormat);
                }
            }
        }