void PaintHexString(Graphics g, byte b, Brush brush, Point gridPoint)
{
PointF bytePointF = GetBytePointF(gridPoint);
string sB = ConvertByteToHex(b);
g.DrawString(sB.Substring(0, 1), Font, brush, bytePointF, _stringFormat);
bytePointF.X += _charSize.Width;
g.DrawString(sB.Substring(1, 1), Font, brush, bytePointF, _stringFormat);
}