First of all thanks for providing the free evaluation.
I've downloaded the dll(ver 220.127.116.11) and i prepared a demo to extract the thumbnails of all the slides in an uploaded presentation.
Size objSize = new Size(800,600);
System.Drawing.Image objImage = objPresentation.Slides.GetThumbnail(objSize);
It works fine. All thumbnails are extracted and saved as jpg. But I cannot open these saved images in internet explorer. But when i save this image manually, by opening it in mspaint and rename it(with same extension .jpg), it can be viewed in ie.
Why is it so?
My requirement is that I want to save the slides in a ppt as images.
Waiting for your reply,
Thanks in Advance