asp.net|图形<% Page Language="vb" Debug="True" %>
<% import namespace="system.drawing" %>
<% import namespace="system.drawing.imaging" %>
<% import namespace="system.drawing.drawing2d" %>
<% ''''''''''''''''''''''''''''
'让Asp.Net输出图形.
'欧阳东杰(oydj)原创.
'QQ:2596812
'E-mail:lovedvip.sina.com
'MSN:xzskywebhotmail.com
'欢迎大家联系我交流技术
'''''''''''''''''''''''''''''



dim strFilename as string '声明变量,用于图片路径
dim i as System.Drawing.Image '创建.net框架图像处理对象实例
dim imgg1 as Integer =CInt(Int((6 * Rnd()) + 1)) '生成1-6的随机数
dim oydj as string=imgg1

strFilename ="d:\o123\"+oydj+".jpg" '载入的图片路径,这里的oydj代表随机生成的变量,用于生成随机图片

i = System.Drawing.Image.FromFile(strFilename)

dim b as New system.drawing.bitmap(i.width, i.height, pixelformat.format24bpprgb)
dim g as graphics = graphics.fromimage(b)

g.clear(color.blue) '背景色为蓝色


dim sss=Request.ServerVariables("REMOTE_ADDR")
g.drawimage(i,New point(0,0))
'这里表示生成一个字符,9号宋体加粗白色,pointF(160,50)为在屏幕的坐标
g.drawString(sss, New font("宋体",9,fontstyle.bold),new SolidBrush(Color.White),New pointF(160,50))
g.drawString(sss, New font("宋体",9,fontstyle.bold),new SolidBrush(Color.White),New pointF(161,51))



response.contenttype="image/jpeg" '指定输出格式为图形

b.save(response.outputstream, imageformat.jpeg)

b.dispose()

%>



代码演示

http://www.ift99.com/pic3.aspx