Ninject inject a service interface in a web service

I have a web service in my project that I use to return json data to ajax calls.

Injecting my ClientService works fine on regular pages but how do I get it to work in the Web Service?

NinjectWebCommon.cs:

 private static void RegisterServices(IKernel kernel)
        {
            kernel.Bind<IClientService>().To<ClientService>();
        }

Default.aspx.cs: works!

public partial class _Default : System.Web.UI.Page
    {
 [Inject]
        public IClientService clientService { get; set; }

MyWebservice.asmx: NullReferenceException (clientService is null)

 public class MyWebService: System.Web.Services.WebService
    {     
        [Inject]
        public IClientService clientService { get; set; } 


 [WebMethod, ScriptMethod(ResponseFormat = ResponseFormat.Json)]
        public MyObject GetClients(int id)
        {
            var list = clientService.GetClients(id);

Answers:

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Method 1

I have solved this problem. I changed MyWebService class to derive from Ninject.Web.WebServiceBase:

public class MyWebService: WebServiceBase

Method 2

I run on the same problem. Took me a while to figure it out.
My solution to this problem is adding statatic Ninject instantiation of Kernel in Global.asax :

  public class Global : NinjectHttpApplication 
    {
        private static Ninject.IKernel kernel = new Ninject.StandardKernel();

        protected override Ninject.IKernel CreateKernel()
        {

            //Business TI
            kernel.Bind<IYourService>().To<YourService>();

            return kernel;
        }
}

What enables to get it directly from singleton(public) or which solution I choosed, by accesing NinjectHttpApplication’s context :
//in webservice parameterless constructor

yourService = ((NinjectHttpApplication)HttpContext.Current.ApplicationInstance).Kernel.Get<IPublicationService>();

This is the solution for working with legacy asmx web service, putting aside

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