Dear oleko,
If you set:
GalleryBrowser1.UploadLimitMode=GalleryUploadLimitMode.Resize;
GalleryBrowser1.MaxImageFileSize=1000;
When you upload 3000KB image, it will resize your image.
If you set:
GalleryBrowser1.UploadLimitMode=GalleryUploadLimitMode.Reject;;
GalleryBrowser1.MaxImageFileSize=1000;
When you upload 3000KB image, it will pop up message dialog and file will not be uploaded.
Regards,
Eric