Hi

I'm trying to register a global filter in global.asax, I basically just want some code to run on every page to check some session variables, so if anyone knows a better way of doing it that would be great...

I've followed the same principal as registering routes but my code in my overriden  OnApplicationStarted never seems to get executed

this is the contents of global.asax.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using System.Web.Security;
using System.Web.SessionState;
using MyApp.Filters;

namespace MyApp
{
    public class MyApp : Umbraco.Web.UmbracoApplication
    {

        public static void RegisterGlobalFilters(GlobalFilterCollection filters)
        {
            filters.Add(new HandleErrorAttribute());
        }
        
        protected override void OnApplicationStarted(object sender, EventArgs e)
        {
            base.OnApplicationStarted(sender, e);
            
            GlobalFilters.Filters.Add(new SessionActionFilterAttribute());
            RegisterGlobalFilters(GlobalFilters.Filters);         

        }               
    }
}