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ASP.Net Running Code behind an image - 14/06/2012

Sometimes you want to serve an image, but you want a record of the image being served.  You may want some code to alter an image.  You may want to programatically choose an image to serve.  Whatever, this is a way to serve an image and run some code, in this case the code chooses which of three images to serve...

' start by choosing which pic to show
' pick a number between 1 and 3

 dim x as integer =
 if x > -1 and x < 334 then
  x = 1
 end if
 if x > 333 and x < 667 then
  x = 2
 end if
 if x > 666 then
  x = 3
 end if

' create the image location

 dim filename as string = server.mappath("\myimages\") & "thisimage" & x & ".jpg"

' serve the image

 dim servepic as new bitmap(filename)

 servepic.Save(Response.OutputStream, ImageFormat.jpeg)


The key bit is...

dim servepic as new bitmap(filename)

 servepic.Save(Response.OutputStream, ImageFormat.jpeg)


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