How to register types that implement a specific interface on a ninject container

Question

How can I register on a ninject container all the types that implement a specific interface? It's worth saying that I'm using Webforms so IBuildManager is not available. I'd like to achieve something I saw on a MVC application with unity which goes like this:

private static void RegisterRepositories(IBuildManager buildManager, IUnityContainer container)
        {
            Type genericRepositoryType = typeof(IRepository<>);

            IEnumerable<Type> repositoryContractTypes = buildManager.PublicTypes.Where(type => (type != null) && type.IsInterface && type.GetInterfaces().Any(interfaceType => interfaceType.IsGenericType && interfaceType.GetGenericTypeDefinition().Equals(genericRepositoryType))).ToList();

            foreach (Type repositoryImplementationType in buildManager.ConcreteTypes.Where(implementationType => repositoryContractTypes.Any(contractType => contractType.IsAssignableFrom(implementationType))))
            {
                foreach (Type repositoryInterfaceType in repositoryImplementationType.GetInterfaces())
                {
                    container.RegisterType(repositoryInterfaceType, repositoryImplementationType, perRequest());
                }
            }
        }