Hi,

Does anybody know DNN (Dot Net Nuke) Content Management System. Works on Microsoft ASP.Net
I'm having some trouble with the photo uploading feature. Currently user in admin mode can upload pictures of any size and byte, (regardless of the instructions I have put there for reducing image dimensions & bytes) causing runtime errors on the site.
I want to put a warning or error message so that user is unable to upload a file unless its modified to the specified instructions for optimizing and resizing the photos.
Any help is appreciated!