public static void ClearContext()
 {
     context = null;
 }
 static void InitContext()
 {
     context = new DefaultScopeOfflineContext("ListsManagerCache", new Uri("http://[YourHostName]/listservice/defaultscopesyncservice.svc/"));
     context.CacheController.ControllerBehavior.AddScopeParameters("UserID", SettingsViewModel.Instance.UserId.ToString());
     context.CacheController.ControllerBehavior.SerializationFormat = SerializationFormat.ODataJSON;
 }