I'm adding in a check to prevent the deletion of certain items:

       private void Content_Deleted(IContentService sender, DeleteEventArgs<IContent> e)
        {
            if (e.DeletedEntities.Any(node => tagsToCheck.Contains(node.Id)))
            {
                e.Cancel = true;
            }
         }

but this throws and error: This event argument class does not support cancelling

Any ideas?

For now I'm throwing an error to cancel and show in the dashboard, but would like a more elegant solution!

Also, while we're there, how do i show a friendly error page in the dashboard?

thanks in advance

Ian