public SecondPage() { InitializeComponent(); this.Loaded += SecondPage_Loaded; // Create some demonstration data. this.DemoData = SecondPage.CreateDemoList(30); // Set the listbox data context (and the bound ItemsSource) to the demo data collection. this.reorderListBox.DataContext = this.DemoData; //// create a new instance of store data //storeData = new StoreData(); //// set the source of the GridView to be the sample data //ItemGridView.ItemsSource = storeData.Collection; }