How to ensure a an ASP.NET web app is fully compiled at startup

PrecompileWebApp.cs

using System;
using System.Web;
// ...
namespace Foo
{
    public class MyWebApp : System.Web.HttpApplication
    {
        protected void Application_Start()
        {
            var cbm = new System.Web.Compilation.ClientBuildManager(HttpRuntime.AppDomainAppId, null);
            cbm.PrecompileApplication();
        }
    }
}