.net c# winform画直线,长方形,椭圆形,圆形

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在winform窗体中,可以使用Graphics画出各种形状.

1.画直线

        private void zbtnsteep_Click(object sender, EventArgs e)
        {
            Graphics graphics = this.CreateGraphics();
            Pen mypen = new Pen(Color.Blue, 1);
            for (int i = 1; i < 9; i++)
            {
                mypen = new Pen(Color.Blue, i);
                graphics.DrawLine(mypen, 30, i * 60, 150, i * 60);
            }
        }

2.画矩形(长方形)

        private void zbtnrectangle_Click(object sender, EventArgs e)
        {
            Graphics graphics = this.CreateGraphics();
            Pen mypen = new Pen(Color.Blue, 1);
            for (int i = 1; i < 8; i++)
            {
                mypen = new Pen(Color.Blue, i);
                graphics.DrawRectangle(mypen, 200, i * 60, 120, 50);
            }
        }

3.画椭圆形

        private void zbtnoval_Click(object sender, EventArgs e)
        {
            Graphics graphics = this.CreateGraphics();
            Pen mypen = new Pen(Color.Blue, 1);
            for (int i = 1; i < 8; i++)
            {
                mypen = new Pen(Color.Blue, i);
                Rectangle myRectangle = new Rectangle(400, i * 60, 100, 50);
                graphics.DrawEllipse(mypen, myRectangle);
            }
        }

4.画圆形

        private void zbtnyuan_Click(object sender, EventArgs e)
        {
            Graphics graphics = this.CreateGraphics();
            Pen mypen = new Pen(Color.Blue, 1);
            for (int i = 1; i < 5; i++)
            {
                mypen = new Pen(Color.Blue, i);
                Rectangle myRectangle = new Rectangle(600, (i) * 60+(i-1)*60, 100, 100);
                graphics.DrawEllipse(mypen, myRectangle);
            }
        }

效果如下