I have add a service reference into my WPF application

Question

I have add a service reference into my Application with service name BingRoutingService now in the code of my Mainwindow.xmal.cs i am when writing this line it says the type or namespace BingRoutingService cannot be found you are missing a using directive or assembly 

i have these using statement

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

using DevExpress.Map.BingServices;

namespace DevelopersApp

my project name is DevelopersAPP
check the attached document for checking the hierarchy

http://tinypic.com/r/sgriop/9