WINFORM学习手册——画线、椭圆、馅饼、多边形

一、线条：

/// <summary>
        /// 画直线
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PaintLine(object sender, PaintEventArgs e)
        {
            Pen pen = new Pen(Color.Red, 5);//创建一只红色的画笔
            pen.DashStyle = DashStyle.Dash;//画笔样式，-.-.-.-.-.-.
            e.Graphics.DrawLine(pen, 60, 60, 100, 200); //直线的两头分别是（60,60）和（100,200）
        }

二、椭圆：

/// <summary>
        /// 画椭圆
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PaintCircle(object sender, PaintEventArgs e)
        {
            Pen pen = new Pen(Color.Blue, 10);//创建一只蓝色的画笔
            pen.DashStyle = DashStyle.DashDotDot;//画笔样式，-..-..-..-..
            e.Graphics.DrawEllipse(pen, 70, 70, 50, 50);
        }

三、馅饼：

/// <summary>
        /// 画馅饼
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PaintPie(object sender, PaintEventArgs e)
        {
            Pen pen = new Pen(Color.Black, 1);//创建一只黑色的画笔
            pen.DashStyle = DashStyle.Dot;//画笔样式，................
            e.Graphics.DrawPie(pen, 90, 80, 140, 40, 120, 100);
        }

四、多边形：