asp.net中如何绘制图形啊????

[zjjjjj]

我想根据用户的数据给出一个图表,如何制作,给点代码参考一下,谢谢!!!

[lkk2073]

最好用图表控件:
http://www.sorke.com

Dundas Chart3.5

自己绘制也可以,给你点代码:
using System.Drawing.Imaging;

if(!IsPostBack)
{
Bitmap bm = new Bitmap ( 800 , 600 ) ;
//创建一个长度为600，宽带为400的Bitmap实例
Graphics g ;
g = Graphics.FromImage ( bm ) ;
//由此Bitmap实例创建Graphic实例
g . Clear ( Color . Snow ) ;

//样式一
Pen pen1 = new Pen(Color.FromArgb(255, 0, 0, 255),3);
//样式二
Pen pen2 = new Pen(Color.Red,2);
//样式三
Pen pen3 = new Pen(Color.Green,2);

//主线
g.DrawLine(pen1,100,100,100,520);
g.DrawLine(pen1,100,520,720,520);

//箭头
g.DrawLine(pen3,100,100,110,110);
g.DrawLine(pen3,100,100,90,110);

g.DrawLine(pen2,720,520,710,510);
g.DrawLine(pen2,720,520,710,530);

bm.Save ( Response . OutputStream , ImageFormat.Jpeg ) ;
}