Asp.NET 2.0 绘图

      今天上午的主要任务是搞绘图,搞了一上午,有收获.也有困难.就是不知道如何寻找路径.
      代码贴一下，便于以后学习:

        protected void Page_Load(object sender, EventArgs e)
        {
            Bitmap bm = new Bitmap(800, 600);

            Graphics g = Graphics.FromImage(bm);

            g.Clear(Color.LightBlue);

            Pen p = new Pen(Color.Blue, 2);

            g.DrawLine(p, new Point(0, 300), new Point(bm.Width, 300));

            g.DrawLine(p, new Point(400, 0), new Point(400, bm.Height));

            Rectangle rect = new Rectangle(50,150, 50, 50);
            Rectangle rect2 = new Rectangle(400, 150, 50, 50);
            Rectangle rect3 = new Rectangle(200, 250, 50, 50);
            
            g.DrawEllipse(p, rect);
            g.DrawEllipse(p, rect2);
            g.DrawEllipse(p, rect3);

            g.DrawLine(p, new Point(rect.X + rect.Width / 2, rect.Y + rect.Height / 2), new Point(rect2.X + rect.Width / 2, rect.Y + rect2.Height / 2));
            
            Brush b = new SolidBrush(Color.Red);
            
            Font drawFont = new Font("Arial", 16);

            for (int i = 0; i <= 8; i++)
            {
                g.DrawString(Convert.ToString(i*10), drawFont ,b, new PointF(i*100, 580));
            }

            for (int j = 0; j <= 6; j++)
            {
                g.DrawString(Convert.ToString(j * 500), drawFont, b, new PointF(0,600-j*100));
            }
            
            bm.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
        }