C# 画标尺

private void MainPictureBox_Paint( object sender, PaintEventArgs e)
{
// board.Location=new Point(scaleHeight,scaleHeight);
Graphics g = e.Graphics;
int width = this .Width;
int height = 50 ;
Font font = new Font( " Arial " , 7 );

// Draw X
for ( int i = 0 ; i <= width; i ++ )
{
SizeF size = g.MeasureString(Convert.ToString(i / 10 ), font);
int x = 5 + ( int )( 7 * i); // 放大倍数
Point start = new Point(x, 30 );
Point end = new Point(x, 30 - 5 );
if (i % 5 == 0 )
{
end = new Point(x, 30 - 10 );
}
if (i % 10 == 0 )
{
end = new Point(x, 30 - 15 );
g.DrawString(Convert.ToString(i / 10 ), font, Brushes.Blue, new PointF(x - size.Width / 2 , 15 - size.Height));
}
g.DrawLine(Pens.Blue, start, end);
}
}