让Asp.Net输出图形

<%@ 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:loved@vip.sina.com
@#MSN:xzskyweb@hotmail.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

原文转自：http://www.ltesting.net