//Loading pages methods
 public void LoadClientPage()
 {
     if (LoggedUser.isAdmin)
     {
         ActiveItem = new ClientGridViewModel();
     }
 }
        protected override void OnViewLoaded(object view)
        {
            if (!context.Database.Exists())
            {
                IWindowManager            manager            = new WindowManager();
                DBInitializationViewModel dbInitializingView = new DBInitializationViewModel(context);
                manager.ShowDialog(dbInitializingView, null, null);
            }

            ActiveItem = new ClientGridViewModel();
        }
 //Loading pages methods
 public void LoadClientPage()
 {
     ActiveItem = new ClientGridViewModel();
 }