Last post Mar 05, 2015 11:07 AM by PatriceSc
Mar 05, 2015 10:46 AM|rspiet|LINK
Since Windows can show thumbnails for any document (PDF, Word, Excel, PowerPoint, Image Files etc.), there has to be a way to extract these same thumbnails using VB.Net so I can display the thumbnails on a web page, without having to have Adobe and Office
installed on the web server. I have searched and searched and have not found any way of doing this. Does anyone have code samples on how to do this?
Mar 05, 2015 11:06 AM|smirnov|LINK
Mar 05, 2015 11:07 AM|PatriceSc|LINK
If I remember :
- sometimes you do have a thumbnail embedded directly into the file (which is perhaps used if available?)
- else as far as I know it is not generated by Windows itself (unless maybe very common file formats) but rather by a "thumbnail provider" registered when you install a particular app and that Windows will then use to create those thumbnails (I don't find now
the article I saw and that I never tried). In my opinion you'll have limited suppoort unless you install something server side.
Else you should have 3rd party Library making this possible for some formats without having to install 3rd party apps...