Graphics怎样在WEB页中创建绘图对象啊?

[meiyoufangxiang]

在winform中可以用Graphic g= this.CreatGraphics();创建一个绘图对象.但是在web页中怎么创建绘图对象啊?

[loulanlouzhu]

Bitmap bm = new Bitmap ( 600 , 300 ) ;
// //创建一个长度为600，宽带为300的Bitmap实例
// Graphics g ;
// g = Graphics.FromImage ( bm ) ;

[Bob]

Creating Graphics On-the-Fly in ASP.NET
By eric neff
Creating graphics for use in a Web page is a snap in .NET. Since this graphic will be hosted in an Image server control you will have full access to placement, sizing and other properties.

http://www.dotnetjunkies.com/Article/C53A9DAC-7DBC-4844-9472-74119526093D.dcik

[meiyoufangxiang]

能给我个实例么?

[loulanlouzhu]

Bitmap bm = new Bitmap ( 600 , 300 ) ;
// //创建一个长度为600，宽带为300的Bitmap实例
// Graphics g ;
// g = Graphics.FromImage ( bm ) ;
// //由此Bitmap实例创建Graphic实例
// g . Clear ( Color . Snow ) ;
// int i = 20;
// int j = 50;
// Point[] points = {
// new Point(20, 50),
// new Point(100, 10),
// new Point(200, 100),
// new Point(300, 50),
// new Point(400, 80)
// };
//
// Pen pen = new Pen(Color.FromArgb(255, 0, 0, 255));
// g.DrawCurve(pen, points, 0.0f);
// bm.Save ( Response . OutputStream , ImageFormat . Jpeg ) ;

[meiyoufangxiang]

好,结贴!