Dynamic Image Generation using Mobile Image Control

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From: Waverider (laurie.mcculloch_at_ntlworld.com)
Date: 09/14/04 

Date: Tue, 14 Sep 2004 23:09:25 GMT

Hi,

I'm trying to implemet some code that dynamically re-scales an image for a mobile image control. The code works fine when I browse to it in Internet Explorer but not when I browse to it on a mobile device, I just get a blank image with a red cross through it. It's got me flummoxed....any ideas.

Here's my code...

to fill my Image control

    Image1.ImageUrl = ("img.aspx?image=/Images/logo_003.gif&height128&width128")
and the code inside the page load event of img.aspx

Try

    Dim _image As String = Request.QueryString("image")
    Dim _height As Int32 = Convert.ToInt32(Request.QueryString("height"))
    Dim _width As Int32 = Convert.ToInt32(Request.QueryString("width"))

    Dim bitmapname As String = Request.PhysicalApplicationPath + _image
    Dim bmpsize As New System.Drawing.Size(_width, _height)

    Dim bmpFile As New Bitmap(bitmapname)
    Dim bmpfile2 As New Bitmap(bmpFile, bmpsize)

    Response.ContentType = "image/gif"
    bmpfile2.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Gif)

Catch ex As Exception

End Try