private void button1_Click(object sender, EventArgs e)
        {
            Graphics graphics = this.CreateGraphics();
            Pen myPen = new Pen(Color.Blue, 1);
            int beginX = 50;
            int beginY = 60;
            int height = 40;
            int width = 55;
            Point X1 = new Point(beginX, beginY);
            Point Y1 = new Point(beginX + 210, beginY);
            Point X2 = new Point(beginX, beginY - 45);
            Point Y2 = new Point(beginX, beginY + 45);
            graphics.DrawLine(myPen, X1, Y1);
            graphics.DrawLine(myPen, X2, Y2);
            graphics.DrawBezier(myPen, beginX, beginY, beginX + 15, beginY - height, beginX + 40, beginY - height, beginX + width, beginY);
            graphics.DrawBezier(myPen, beginX + width , beginY, beginX + width  + 15, beginY + height, beginX + width  + 40, beginY + height, beginX + width * 2, beginY);
            graphics.DrawBezier(myPen, beginX + width * 2, beginY, beginX + width * 2 + 15, beginY - height, beginX + width * 2 + 40, beginY - height, beginX + width * 3, beginY);
            graphics.DrawBezier(myPen, beginX + width * 3, beginY, beginX + width * 3 + 15, beginY + height, beginX + width * 3 + 40, beginY + height, beginX + width * 4, beginY);

        }

繪製波形圖