gistfile1.txt

    public class OwershipVerification : IActionFilter
    {
        public void OnActionExecuting(ActionExecutingContext filterContext)
        {
            foreach(var paramter in filterContext.ActionParameters)
            {
                var haveAnOwner  = paramter.Value as IHaveAnOwner;
                if(haveAnOwner != null)
                {
                    var ownedParameter = haveAnOwner;
                    if(ownedParameter.OwnerId != WebSecurity.CurrentUserId)
                    {
                        // ... do whatever
                    }
                }
            }
        }

        public void OnActionExecuted(ActionExecutedContext filterContext)
        {
            
        }
    }

    public interface IHaveAnOwner
    {
        int OwnerId { get; set; }
    }