Ok Sounds about right, do I need to place the cs file in the App_Code folder?

Yes should be picked up there..

Thanks I am trying to debug my class(attach to iis express), but for some reason I get the following message:

Then the class is not loaded, maybe try starting from Visual studio?

I am starting it from VS, visual studio 2012 to be exact :)

My bad, I needed to change the web.config for debug... Is there a way to get the node url?

umbraco.library.NiceUrl maybe?

Thanks

I think there is a bug. When I first create the page and publish it the event won't trigger, only after I publish the page for the second time I see the event triggers.

this is my code

public class UrlValidationEvent : ApplicationEventHandler
    {
        public UrlValidationEvent()
        {
            ContentService.Publishing += Go;
        }

        private void Go(IPublishingStrategy sender, PublishEventArgs<IContent> args)
        {
            foreach (var node in args.PublishedEntities)
            {
                if (umbraco.library.NiceUrl(node.Id).Length > 38)
                {
                    string newUrl = node.Name.Replace(" ", "-");
                    node.Properties[9].Value = newUrl;
                }
            }
        }
    }`

is working on a reply...