App_Start Folder in ASP 4.5 only in WebApplications Projects?

Question

I have a Website Project I\'ve converted to .NET 4.5. I\'d like to use the AuthConfig that I\'ve seen added to the App_Start

Answer 1

Although There is nothing special about App_Start, but you can make files insinde this folder executes when application started like Application_Start inside Global.asax. I am using Ninject dependency injector in my project which has App_Start folder. There is no Global.asax file in my project:

but all configuration i have set in NinjectWebCommon file will be executed upon starting application. NinjectWebCommon has following content:

using WebFormNinject.Models;

[assembly: WebActivator.PreApplicationStartMethod(typeof(WebFormNinject.App_Start.NinjectWebCommon), "Start")]
[assembly: WebActivator.ApplicationShutdownMethodAttribute(typeof(WebFormNinject.App_Start.NinjectWebCommon), "Stop")]

namespace WebFormNinject.App_Start
{
    using System;
    using System.Web;

    using Microsoft.Web.Infrastructure.DynamicModuleHelper;

    using Ninject;
    using Ninject.Web.Common;

    public static class NinjectWebCommon 
    {
        private static readonly Bootstrapper bootstrapper = new Bootstrapper();

        /// 

        /// Starts the application
        /// 
        public static void Start() 
        {
            DynamicModuleUtility.RegisterModule(typeof(OnePerRequestHttpModule));
            DynamicModuleUtility.RegisterModule(typeof(NinjectHttpModule));
            bootstrapper.Initialize(CreateKernel);
        }

        /// 

        /// Stops the application.
        /// 
        public static void Stop()
        {
            bootstrapper.ShutDown();
        }

        /// 

        /// Creates the kernel that will manage your application.
        /// 
        /// The created kernel.
        private static IKernel CreateKernel()
        {
            var kernel = new StandardKernel();
            kernel.Bind>().ToMethod(ctx => () => new Bootstrapper().Kernel);
            kernel.Bind().To();

            RegisterServices(kernel);
            return kernel;
        }

        /// 

        /// Load your modules or register your services here!
        /// 
        /// The kernel.
        private static void RegisterServices(IKernel kernel)
        {
            kernel.Bind().To();
        }        
    }
}

I was curious where RegisterServices function will be executed! Then I noticed to this section of code:

[assembly: WebActivator.PreApplicationStartMethod(typeof(WebFormNinject.App_Start.NinjectWebCommon), "Start")]
[assembly: WebActivator.ApplicationShutdownMethodAttribute(typeof(WebFormNinject.App_Start.NinjectWebCommon), "Stop")]

These attributes make Start method executed on application started. For more information look at WebActivator / PreApplicationStartMethod