title: WCF DATA SERVICES AddObject
body: <p>I am trying to add an object to my entity but it is giving me the error: "Not Found"
  here is my code:</p>
  
  <pre><code>    DataServiceContext dtx = new DataServiceContext(new Uri("http://localhost/website2/wcfservice1.svc/"));
      dtx.Credentials = System.Net.CredentialCache.DefaultCredentials;
      ServiceReference1.Car car = new ServiceReference1.Car();
      car.CarName = "aaa";
      car.CarModel = "111";
  
      dtx.AddObject("Car", car);
  
      dtx.SaveChanges();
  </code></pre>
  
  <p>I have tried "Cars" and "Car" both in AddObject but still didnt help.. my CARID column is a PKEY column in database.</p>
  
  <p>Please help. Thanks.</p>