CRM Online connect to IOrganizationService

In previous post I told how to connect to Discovery Service CRM Online. Now I want give you example of code how to connect to Organization Service

    class Program

    {

        static void Main(string[] args)

        {

            String userName;

            String password;

            String organizationUrl;

            userName = <your-Live-ID>;

            password = <Live-ID-Password>;

            organizationUrl = "https://<your-org-name>.crm.dynamics.com/XRMServices/2011/Organization.svc";

            ClientCredentials credentials = new ClientCredentials();

            credentials.UserName.UserName = userName;

            credentials.UserName.Password = password;

            OrganizationServiceProxy _serviceProxy;

            IOrganizationService _service;

            using (_serviceProxy = new OrganizationServiceProxy(

new Uri(organizationUrl), 

null, 

credentials, 

Microsoft.Crm.Services.Utility.DeviceIdManager.LoadOrRegisterDevice()))

            {

                _service = (IOrganizationService)_serviceProxy;

                WhoAmIResponse response = 

(WhoAmIResponse)_service.Execute(new WhoAmIRequest());

                Console.WriteLine(response.UserId.ToString());

            }

            Console.ReadLine();

        }

    }