gistfile1.txt

using System;
using umbraco;
using Umbraco.Core;
using Umbraco.Core.Events;
using umbraco.interfaces;
 
namespace MyNameSpace
{
    public class StartupEventHandlers : IApplicationStartupHandler
    {
        public StartupEventHandlers()
        {
            umbraco.macro.Error += macro_Error;
        }
 
        void macro_Error(object sender, Umbraco.Core.Events.MacroErrorEventArgs e)
        {
            // Banner ads - who cares?
            if(e.Alias == "bannerAds")
            {
               // Hide the macro
               e.Behaviour = MacroErrorBehaviour.Silent;
               
               // But still log the issue (your own logging code)
               log.ErrorException(String.Format("Macro failed to load: {0}", e.Alias), e.Exception);
            }

            // Search is real important so we want to blow up the site if it's not working so our custom error page is shown
            if(e.Alias == "siteSearch")
            {
               // Force exception to be thrown
               e.Behaviour = MacroErrorBehaviour.Throw;
               
               // And log the issue (your own logging code)
               log.ErrorException(String.Format("Macro failed to load: {0}", e.Alias), e.Exception);
            }

            // All other cases will use the behaviour defined in umbracoSettings for <MacroErrors>
        }
    }
}