服务器端画图，发到客户端

[zqsntws]

我想在服务器端通过graphics等画一幅点线结合的图，然后把结果发到客户端，显示给客户端用户。1、怎么在服务器端画图2、怎么把图保存成图片

[liujiayu10]

Bitmap bm = new Bitmap ( 600 , 250 ) ;
//创建一个长度为600，宽带为250的Bitmap实例
Graphics g ;
g = Graphics.FromImage ( bm ) ;
//由此Bitmap实例创建Graphic实例
g . Clear ( Color . Snow ) ;
//用Snow色彩为背景色填充此绘画图面
g . DrawString ( " ××公司××器件2002年度销售情况一览表" , new Font ( "宋体" , 16 ) , Brushes . Black , new Point ( 5 , 5 ) ) ;


Pen p = new Pen ( Color.Black , 2 ) ;
g . DrawRectangle ( p , 1 , 1 , 598 , 248 ) ;
bm.Save ( Response . OutputStream , ImageFormat . Jpeg ) ;

[liujiayu10]

//以下代码是绘制图01中的边框，并形成Jpeg文件，供浏览器显示出来
Pen p = new Pen ( Color.Black , 2 ) ;
g . DrawRectangle ( p , 1 , 1 , 598 , 248 ) ;
bm.Save ( Response . OutputStream , ImageFormat . Jpeg ) ;

[Knight94]

方法一：直接用byte流返回，用一个新的aspx来返回一个image链接，然后在当前的页面显示
//Page_load event in image aspx
Bitmap bitGraph = new Bitmap( nClientWidth, nClientHeight );
Graphics gImage = Graphics.FromImage( bitGraph );
//Draw image using "gImage"

MemoryStream ms = new MemoryStream();
bitGraph.Save( ms, System.Drawing.Imaging.ImageFormat.Jpeg );
ms.Flush();
byte[] bData = ms.GetBuffer();
ms.Close();

try
{
Response.ContentType = "image/gif";
Response.BinaryWrite( ms.GetBuffer() );
}
catch(Exception Error)
{
Response.Write(Error.Message);
}

[huacha]

http://www.wave12.com/web/SigCon.asp?bCate=41&sCateName=%B9%A6%C4%DC%BD%E9%C9%DC&ID=143&CateName=wsChart4.5(DLL)