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| Author | Forum: PowerWEB Zoom for ASP.NET Topic: Major Issue...any ideas? |
| chaynes68 From: concord, MA USA Posts: 5 Member Since: 09/26/06 |
posted October 3, 2006 5:21 PM It seems like the callbackmanager is breaking some code that returns dynamically generated images. Reduced to its simplest form: Dim x As New Bitmap("someimage.gif") mo_Bitmap.Save(Response.OutputStream,ImageFormat.Gif) With callbackmanager httpModule DISABLED this code works as expected, enabled the image is not returned. Any idea why this is happening? Chris |
| chaynes68 From: concord, MA USA Posts: 5 Member Since: 09/26/06 |
posted October 3, 2006 6:18 PM I solved it. Looks like you must specify the content type in the http header: Response.ContentType = "image/GIF" There should be a warning someplace about this...maybe there is and I missed it. Bottom line: If you dynamically generate images and use PowerWeb.Zoom you MUST specify a content type otherwise the http handler will mess with your image. This is one of those things that browsers figure out even without specifying a content type but is technically incorrect I guess. Chris |
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