just output images, for example, seeCreate Snazzy Web Charts and Graphics On the Fly with the .NET Framework
http://msdn.microsoft.com/msdnmag/issues/02/02/ASPDraw/default.aspxhttp://www.codeproject.com/aspnet/aspnet_web_graphics.asp
http://msdn.microsoft.com/msdnmag/issues/02/02/ASPDraw/default.aspxhttp://www.codeproject.com/aspnet/aspnet_web_graphics.asp
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