Hi,

I'm involved in a project that requires me to display JPEG files on webforms.
I can display the normal JPEGs, but when some of the JPEG files are corrupted, these files cannot be displayed.
I've read somewhere that corrupted JPEG files can actually be loaded using the system.drawing class.

Anyone can advise me on this and how to get it done?
(I'm using VB.NET.)

Thanks!

Scripts82

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Scripts82

Can you load any of the image files into say Photoshop and view them? I have quite a bit of exerpeince with the GDI+ classes and know of no way to recreate a jpg that has been corrupted (I am not saying it isnt possible, i just dont know how).

I will tell you this though, Basic GDI+ howtos are a dime a dozen, it is very hard to find Advanced GDI techniques on the web, so it a way does exist (I would start by checking the MSDN) and work your way out from there.

"The one language all programmers understand is profanity."

Hi dparsons,

Since you have quite some experience in GDI+, from what you know, are there any ways to "force" a stream of bytes to be displayed as an image?

Thanks.

Scripts82

No. As far as GDI is concerned an image is an image is an image (once you have loaded an image into GDI it becomes format independant) so if you load a jpg into GDI you can export it as a bitmap no problem; but you can't 'force' gdi to make you a renderable image.

A corruption can occur from many things, like the loss of bytes (data) and gdi has no way of knowing what that data should look like.

"The one language all programmers understand is profanity."

Hi dparsons,

I think I get what you mean.
Thanks for this clarification!

Scripts82