vreksam/WebApi/App_Start/NinjectWebCommon.cs

using BL.Interfaces;
using DAL.Repositories;

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

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

    using Microsoft.Web.Infrastructure.DynamicModuleHelper;

    using Ninject;
    using Ninject.Web.Common;
    using System.Web.Http;
    using Ninject.Web.WebApi;
    using DAL;
    using DAL.Interfaces;
    using BL.Services;

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

        /// <summary>
        /// Starts the application
        /// </summary>
        public static void Start() 
        {
            DynamicModuleUtility.RegisterModule(typeof(OnePerRequestHttpModule));
            DynamicModuleUtility.RegisterModule(typeof(NinjectHttpModule));
            bootstrapper.Initialize(CreateKernel);
        }
        
        /// <summary>
        /// Stops the application.
        /// </summary>
        public static void Stop()
        {
            bootstrapper.ShutDown();
        }
        
        /// <summary>
        /// Creates the kernel that will manage your application.
        /// </summary>
        /// <returns>The created kernel.</returns>
        private static IKernel CreateKernel()
        {
            var kernel = new StandardKernel();
            try
            {
                kernel.Bind<Func<IKernel>>().ToMethod(ctx => () => new Bootstrapper().Kernel);
                kernel.Bind<IHttpModule>().To<HttpApplicationInitializationHttpModule>();

                RegisterServices(kernel);

                // Support WebAPI
                GlobalConfiguration.Configuration.DependencyResolver = new NinjectDependencyResolver(kernel);

                return kernel;
            }
            catch
            {
                kernel.Dispose();
                throw;
            }
        }

        /// <summary>
        /// Load your modules or register your services here!
        /// </summary>
        /// <param name="kernel">The kernel.</param>
        private static void RegisterServices(IKernel kernel)
        {
            kernel.Bind<IFoorumDbContext>().To<FoorumDbContext>().InRequestScope();
            kernel.Bind<IFoorumRepository>().To<FoorumRepository>().InRequestScope();
            kernel.Bind<IPostRepository>().To<PostRepository>().InRequestScope();
            kernel.Bind<IFoorumService>().To<FoorumService>().InRequestScope();
        }
    }
}