George,
Emailing me personally is entirely proper! Feel free to contact me whenever
you want.
I love the link you sent:
http://msdn.microsoft.com/msdnmag/is...4/CuttingEdge/
When I created my image manipulation project I was looking for a multi
browser compatible way of delivering an image to a page dynamically and came
across another sample project that showed how to do so. (I don't recall the
link.) The link you sent looks like a much better way to do so! I'll
probably convert mine to use it.
I'm confused on how 'ImageDelivery. aspx' got a reference to the image and
also I'm not clear on exactly what it's needed for.
ImageDelivery.a spx is being sent an image id in the query string: Dim
ImageGuid As String = Request.QuerySt ring("id")
The Guid is being used when the image is stored in the datatable as the row
key. And that is what is used to retrieve the data and send the changed
image to the page display.
One confusing part of the query string may be the random number I'm tacking
on to it. Internet Explorer on the Mac caches images and doesn't check if
the image has changed from one post to another even if caching is turned
off. So I'm adding on the random number just to change the image's url
enough so that IE on the MAC reloads the new image.
When posting back the page, isn't there a way to set the image url to a
variable holding the image data?
It looks like you answered this one yourself with the link you sent me.
Also, I'm using a dataset to hold various session data. Could I just use
this dataset to hold the image data in the same way you used the
application.ite m datatable?
Yes.
I didn't see any binary data types in the dataset and noticed that you
defined the datatable column like this: ImageTable.Colu mns.Add(New
DataColumn("Opt imizedImage", GetType(Object) )) I'm not sure how that would
translate to a strongly typed dataset column.
Technically this column is a strongly typed data column. It's just of the
top type "Object". You could easily change this to be of type stream or
image. I just wanted the flexibility to store most anything in the column
because when I created this project I wasn't positive which I'd be storing
there.
Sincerely,
--
Sincerely,
S. Justin Gengo, MCP
Web Developer / Programmer
www.aboutfortunate.com
"Out of chaos comes order."
Nietzsche
"moondaddy" <mo*******@nosp am.com> wrote in message
news:uY******** *****@tk2msftng p13.phx.gbl...
Nice sample project Justin. I have a few questions though. I'm confused
on how 'ImageDelivery. aspx' got a reference to the image and also I'm not
clear on exactly what its needed for. When posting back the page, isn't there a
way to set the image url to a variable holding the image data? Also, I'm
using a dataset to hold various session data. Could I just use this
dataset to hold the image data in the same way you used the application.ite m
datatable?
Thanks.
--
mo*******@nospa m.com
"S. Justin Gengo" <sjgengo@aboutf ortunate[no-spam].com> wrote in message
news:10******** *****@corp.supe rnews.com... Moondaddy,
System.Drawing. Image.GetThumbn ail is what you need. If you want more detail, I have an ASP.NET v.1.1 project you can download from my website that
uses a couple of pages to allow a user to upload an image, resize it, and set it's quality. It does a lot more than what you need here, but if you take a
look at the code you'll see how I'm resizing images and setting their quality
which you can then use to create your thumbnails. All the code on my
site is free.
--
Sincerely,
S. Justin Gengo, MCP
Web Developer / Programmer
www.aboutfortunate.com
"Out of chaos comes order."
Nietzsche
"moondaddy" <mo*******@nosp am.com> wrote in message
news:%2******** ********@TK2MSF TNGP12.phx.gbl. .. I have an app where users will upload photos to their shopping cart.
When they review their cart I need to include a light weight thumbnail of
the image they uploaded. how can I take the image a user uploaded
(PixOfMom.jpg at 600k) and convert it to a thumbnail and put into the image url of a
.net image control using vb.net 1.1?
Thanks!
--
mo*******@nospa m.com
