1             Graphics graphics = e.Graphics;
 2 
 3             //绘制实线
 4             using (Pen pen = new Pen(Color.Black, 2))
 5             {
 6                 pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid; //实现
 7                 graphics.DrawLine(pen,0,10,100,10);
 8             }
 9 
10             //画出虚线
11             using (Pen pen = new Pen(Color.Black, 2))
12             {
13                 pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash; //虚线
14                 graphics.DrawLine(pen, 0, 15, 100, 15);
15             }
16 
17             //画出矩形
18             using (Pen pen = new Pen(Color.Black, 2))
19             {
20                  Rectangle rectangle = new Rectangle(2,30,100,50);
21                     graphics.DrawRectangle(pen,rectangle);
22             }
23 
24             //绘制字符串
25             string str = "Hello 笨男孩!";
26             graphics.DrawString(str, this.Font, Brushes.Black, 2, 100);
27 
28             //测量字符串的高度和宽度
29             SizeF szfTitle = graphics.MeasureString(str, this.Font);
30             graphics.DrawString(str, this.Font, Brushes.Black, 2, 200-(int)szfTitle.Height);
31             graphics.DrawString("该字符串高度："+szfTitle.Height+" 字符串宽度："+szfTitle.Width, this.Font, Brushes.Black, 2, 200);
32 
33 
34 
35             //绘制圆
36             using(Pen pen = new Pen(Color.Black,2))
37             {
38                 //圆
39                 graphics.DrawEllipse(pen,2,230,100,100); //在画板上画椭圆,起始坐标为(10,10),外接矩形的宽为100,高为100   此时就是一个圆
40 
41                 //椭圆
42                 graphics.DrawEllipse(pen, 2, 400, 100, 50); //在画板上画椭圆,起始坐标为(10,10),外接矩形的宽为100,高为50   此时就是一个椭圆
43             }